tag:blogger.com,1999:blog-340858692012-01-14T04:12:38.610-08:00A corner of miscellany about Science, Technology, Ecology, Medicine, Humor, Curiosities, experiences or personal comments.Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.comBlogger4641100tag:blogger.com,1999:blog-34085869.post-32822386286652043122012-01-08T11:27:00.000-08:002012-01-08T11:27:23.836-08:00

A technique for mapping our DNA in three dimensions emerged from an undergraduate's musings AN ELEGANT MESS: A new essay explains the inspiration and concepts behind some of the recent efforts to map the human genome in three dimensions.Image: Miriam Huntley/Rob Scharein/Erez Lieberman Aiden Erez Lieberman Aiden was an undergraduate at Princeton University in 2000 when scientists

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-8828913175523040232012-01-08T11:15:00.000-08:002012-01-08T11:15:02.564-08:00

The discovery, of objects 9.7 billion solar masses large or more, suggests there is still much to learn about how monster black holes grow. An artist's conception of stars moving in the central regions of a giant elliptical galaxy that harbors a supermassive black hole.Image: Gemini Observatory/AURA artwork by Lynette Cook Scientists have discovered the largest black holes yet, and

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-10428040666996304302012-01-08T10:32:00.000-08:002012-01-08T10:32:08.219-08:00

While in the checkout line of a local Rite Aid this weekend, I was struck by “The Sex Addiction Epidemic” cover of Newsweek. Quickly intrigued by the promise of such a lead story, I plopped down on a neighboring Coke display to read and process, where excitement quickly derailed to dismay. As seen in the online version, this story about a serious, detrimental issue contained stock photos

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-45669977005671211582011-12-23T23:54:00.000-08:002011-12-24T00:03:04.883-08:00

Image: Ulyana Horodyskyj Himalayan glaciers are melting and retreating at their edges because of global warming. But they also conceal a more ominous effect of climate change: they are deflating. They are losing internal ice mass to melting, which can substantially hasten their disappearance. Scientists have recently captured real-time video showing a glacier purging its own meltwater, and

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-10708975770129191402011-12-23T23:37:00.000-08:002011-12-24T00:02:07.183-08:00

Ad on a London Bus. Courtesy of Annie Wade via Flickr. People have long tried tricks to aid their memories. One of the most useful of these so-called mnemonic devices, I’ve found, involves associating names with word pictures or with other people you know well. I was just at a party, for example, and met a man who shared a last name with someone I’ve known for a while. I am sure I would

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-85834444596154528792011-12-20T23:27:00.000-08:002011-12-20T23:27:35.507-08:00

Edith Widder's New Crusade: The marine biologist Edith Widder has spent a career studying bioluminescent sea creatures. Now she is using the phenomenon to fight pollution. By ERIK OLSEN Published: December 19, 2011 FORT PIERCE, Fla. — Edith Widder presented a handful of greenish muck that had been pulled from the shallows of the Indian River Lagoon and cupped it in her palm.

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-69977909828852757972011-12-18T22:20:00.000-08:002011-12-19T11:05:09.041-08:00

Plenty of robots can fly -- but none can fly like a real bird. That is, until Markus Fischer and his team at Festo built SmartBird, a large, lightweight robot, modeled on a seagull, that flies by flapping its wings. A soaring demo fresh from TEDGlobal 2011. Look at the video:  

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-57495645121242305132011-12-18T14:11:00.000-08:002011-12-19T10:56:16.526-08:00

Here’s another great video from ByteSizeScience from the ChemMatters series called “The Chemistry of Acne”: This video describes the physiology behind how pimples form. In short, excess sebum (or skin oil) clogs a pore and traps dead skin cells inside. Bacteria proliferate inside the pore to feed on the trapped skin cells. White blood cells migrate to the pore to fight the bacterial infection

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-56396363422723483042011-12-18T13:35:00.000-08:002011-12-18T14:59:53.770-08:00

Vegetarian or vegan readers, would you have a problem with eating meat is the protein was grown in a lab? There would be no* animal cruelty involved, and no living breathing animals would have to die to end up on your plate. Would it be much different to eating Quorn? Will our meat be grown in the lab in future? And will we be able to tell the difference? What about if we could call it

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-4814559988518395902011-12-18T13:08:00.000-08:002011-12-18T13:46:28.992-08:00

You can find a microwave oven in nearly any American kitchen—indeed, it is the one truly modern cooking tool that is commonly at hand—yet these versatile gadgets are woefully underestimated. Few see any culinary action more sophisticated than reheating leftovers or popping popcorn. That is a shame because a microwave oven, when used properly, can cook certain kinds of food perfectly,

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-68610038366959443442011-05-20T10:03:00.000-07:002011-12-18T13:45:39.370-08:00

We’re wired to be social creatures, and sites like Twitter and Facebook have capitalized on this to great success. According to its COO Sheryl Sandberg, Facebook draws 175 million logins every day. But with this tremendous popularity comes a dark side as well. Virus writers and other cybercriminals go where the numbers are -- and that includes popular social media sites. To help you avoid a con

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-27936865556241735412011-05-07T11:18:00.000-07:002011-12-18T13:44:04.037-08:00

Columbia University, the University of Maryland and the Smithsonian Institution have pooled their expertise to create the world’s first plant identification mobile app using visual search—Leafsnap. This electronic field guide allows users to identify tree species simply by taking a photograph of the tree’s leaves. In addition to the species name, Leafsnap provides high-resolution photographs and

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-619734685687166112011-03-18T22:57:00.000-07:002011-03-18T22:57:16.064-07:00

Have you ever wondered if we could replace old worn body parts much like you’d replace parts on your car? Well, that time is nearly here and the possibility of greatly lengthening lifespan may be just around the corner.  New discoveries in the scientific community are quickly advancing the ability to not only replace organs, but grow them from a patients own unique cells.  This episode

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-11267937010451261182011-03-16T03:51:00.000-07:002011-03-16T03:53:04.014-07:00

The type of accident occurring now in Japan derives from a loss of offsite AC power and then a subsequent failure of emergency power on site. Engineers there are racing to restore AC power to prevent a core meltdown. First came the earthquake, centered just off the east coast of Japan, near Honshu. The horror of the tsunami quickly followed. Now the world waits as emergency crews attempt to

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-21762138752769301052011-03-16T03:40:00.000-07:002011-03-16T03:40:18.070-07:00

Will seismologists ever be able to reliably predict the exact location, time and magnitude of earthquakes like the one that just devastated Japan and sent tsunamis racing across the Pacific Ocean? If so, they might be able to save many lives. Consider how many people have been killed by large earthquakes just in the last decade: more than 20,000 people in India in 2001, 30,000 in Iran in 2003,

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-12422369207805166512011-03-15T23:35:00.000-07:002011-03-15T23:41:55.358-07:00

As Japan suffered the worst earthquake in the country's recorded history, tsunami waves fanned out across the Pacific Ocean at the speed of a jetliner The massive magnitude 8.9 earthquake that struck near the east coast of Honshu, Japan's main island, at 2:46 P.M. local time and unleashed a fierce tsunami claiming hundreds of lives is already being felt as far away as the west coast of North

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-87069288236863013842011-03-15T12:18:00.000-07:002011-03-15T12:18:40.944-07:00

"One should not pursue goals that are easily achieved. One must develop an instinct for what one can just barely achieve through one's greatest efforts." —Albert Einstein While Einstein was not a neuroscientist, he sure knew what he was talking about in regards to the human capacity to achieve. He knew intuitively what we can now show with data—what it takes to function at your cognitive best. In

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-27078612541659407672011-03-15T12:06:00.000-07:002011-03-15T12:06:33.036-07:00

The thick glaciers covering Greenland and Antarctica are melting faster than scientists expected Ice loss from the massive ice sheets covering Greenland and Antarctica is accelerating, according to a new study. If the trend continues, ice sheets could become the dominant contributor to sea level rise sooner than scientists had predicted, concludes the research, which will be published this

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-32152944927963405102011-03-15T11:59:00.000-07:002011-03-15T11:59:18.648-07:00

Molten salts can store the sun's heat during the day and provide power at night SUNSHINE STORAGE IN A SALT: The molten salts stored in the two tanks pictured here amidst the rows of troughs at the Andasol 1 power plant in Spain will allow solar energy to produce electricity even at night.Image: COURTESY OF SOLAR MILLENNIUM Near Granada, Spain, more than 28,000 metric tons of salt is now

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-61381974825269896502011-03-15T11:54:00.000-07:002011-03-15T11:54:15.470-07:00

You might be behind the wheel, but increasingly, computers control your car’s every function. Microprocessors direct braking, acceleration and even the horn these days. “Because they are hidden, people don’t often understand that there can be anywhere from 30 to 40 microprocessors in most cars and even up to 100 different ones running different functions in some vehicles,” says Stephan A.

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-85739376489516784182011-03-15T11:40:00.000-07:002011-03-15T11:40:39.625-07:00

A new model for the sun's inner workings may help explain the most recent solar minimum, when sunspots all but disappeared for an unusually long time A few years back, the sun went into a lull, its activity tailing off like a rambunctious child settling down for a nap. The lull was no surprise; it is a normal part of the sun's roughly 11-year cycle of activity, over which the number of

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-36636202395227911242010-11-21T21:47:00.000-08:002010-11-21T23:35:07.665-08:00

TASIILAQ, Greenland — With a tense pilot gripping the stick, the helicopter hovered above the water, a red speck of machinery lost in a wilderness of rock and ice. To the right, a great fjord stretched toward the sea, choked with icebergs. To the left loomed one of the immense glaciers that bring ice from the top of the Greenland ice sheet and dump it into the ocean.  Hanging out the sides

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-87607647636111093962010-11-19T02:20:00.000-08:002010-11-19T02:20:55.961-08:00

When Robert A. Lue considers the “Star Wars” Death Star, his first thought is not of outer space, but inner space. “Luke’s initial dive into the Death Star, I’ve always thought, is a very interesting way how one would explore the surface of a cell,” he said. That particular scene has not yet been tried, but Dr. Lue, a professor of cell biology and the director of life sciences education at

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-9701059150182685722010-11-19T02:09:00.000-08:002010-11-19T02:09:48.631-08:00

SAN FRANCISCO — Since the heyday of AOL’s cheery “You’ve got mail” greeting, e-mail has been central to the online experience for millions of people. But Mark Zuckerberg, the chief executive of Facebook, says e-mail is showing its age. In his view, e-mail is too slow, too formal and too cumbersome, especially for young people who have grown up using text messages and online chats. On

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-87089690233213099622010-11-19T01:49:00.000-08:002010-11-19T01:49:05.847-08:00

A quick experiment. Before proceeding to the next paragraph, let your mind wander wherever it wants to go. Close your eyes for a few seconds, starting ... now. And now, welcome back for the hypothesis of our experiment: Wherever your mind went — the South Seas, your job, your lunch, your unpaid bills — that daydreaming is not likely to make you as happy as focusing intensely on the rest of

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-53417806476596369392010-11-19T01:26:00.000-08:002010-11-19T01:26:05.715-08:00

YOU know how remote and strange the fashion world is when you go to Google’s headquarters in Mountain View, Calif. For one thing, employees are zipping around the sprawling campus on scooters and bicycles, so that pretty much eliminates platform shoes and minis. And for another, there are way too many snack stations at Google. Fashionistas are funny about food. But go a couple of blocks from

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-76769949727850656632010-11-15T00:34:00.000-08:002010-11-15T00:34:29.019-08:00

In 1981 the physicist Richard Feynman speculated about the possibility of “tiny computers obeying quantum mechanical laws.” He suggested that such a quantum computer might be the best way to simulate real-world quantum systems, a challenge that today is largely beyond the calculating power of even the fastest supercomputers. Since then there has been sporadic progress in building this kind

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-42489794064364609902010-11-14T23:14:00.000-08:002010-11-14T23:14:50.402-08:00

If young Harry and friends had not cruised around Hogwarts unseen, hidden by an “invisibility cloak,” much of the hype surrounding metamaterials might itself never have seen the light of day. But when, half a decade ago, researchers made tentative steps toward what had been considered a theoretical possibility — using an artificially structured “meta” material to manipulate light or other

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-17874743048894552602010-07-15T10:07:00.000-07:002010-07-15T10:07:50.877-07:00

“Hi, thanks for coming,” the medical assistant says, greeting a mother with her 5-year-old son. “Are you here for your child or yourself?” The boy, the mother replies. He has diarrhea. “Oh no, sorry to hear that,” she says, looking down at the boy. The assistant asks the mother about other symptoms, including fever (“slight”) and abdominal pain (“He hasn’t been complaining”). She turns

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com1tag:blogger.com,1999:blog-34085869.post-58312246526451787532010-07-09T12:03:00.000-07:002010-07-09T12:07:00.334-07:00

Researchers at Microsoft are developing technology that would allow more than one person to have a conversation with a computer in a variety of settings. Below, a demonstration of how a medical office might be staffed by a machine. The example was designed to illustrate how parts of the technology work together and how people take on different roles in a conversation. Video frames by Microsoft

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-38164682386326398862010-07-02T07:24:00.000-07:002010-07-02T07:24:46.541-07:00

It has been hiding in plain sight for the past 500 years, and now two Johns Hopkins professors believe they have found it: one of Michelangelo’s rare anatomical drawings in a panel high on the ceiling of the Sistine Chapel. Michelangelo was a conscientious student of human anatomy and enthusiastically dissected corpses throughout his life, but few of his anatomical drawings survive. This one,

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com1tag:blogger.com,1999:blog-34085869.post-84900244924762059952010-03-12T11:39:00.000-08:002010-03-12T11:39:29.836-08:00

In a meeting at Google in 2004, the discussion turned to an e-mail message the company had received from a fan in South Korea. Sergey Brin, a Google founder, ran the message through an automatic translation service that the company had licensed. The message said Google was a favorite search engine, but the result read: “The sliced raw fish shoes it wishes. Google green onion thing!”  Mr. Brin

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-53906784643630415952010-03-12T11:17:00.000-08:002010-03-12T11:17:00.399-08:00

EACH year some 30 million American men undergo testing for prostate-specific antigen, an enzyme made by the prostate. Approved by the Food and Drug Administration in 1994, the P.S.A. test is the most commonly used tool for detecting prostate cancer. The test’s popularity has led to a hugely expensive public health disaster. It’s an issue I am painfully familiar with — I discovered P.S.A. in

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-33441776071024825132010-03-12T10:57:00.000-08:002010-03-12T11:41:11.088-08:00

Toyota has suspended sales of eight of its most popular vehicle models while the motor company investigates sticking accelerator pedals, following reports by ABC News' Brian Ross that examined incidents of random acceleration, some of which resulted in fatalities.  Toyota dealers across the country have been instructed not to sell the 2009-2010 RAV4, 2009-2010 Corolla, 2009-2010 Matrix, 2005

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-61495578159663625332010-03-12T10:30:00.000-08:002010-03-12T10:30:18.436-08:00

Two years ago, this gritty mining city hosted a brief 21st-century gold rush. Long famous for coal, Puertollano discovered another energy source it had overlooked: the relentless, scorching sun.  Armed with generous incentives from the Spanish government to jump-start a national solar energy industry, the city set out to replace its failing coal economy by attracting solar companies, with a

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-68133242197074654592010-03-12T10:19:00.000-08:002010-03-12T10:33:28.460-08:00

In former swamplands teeming with otters and wild hogs, one of the nation’s biggest utilities is running an experiment in the future of renewable power.  Across 500 acres north of West Palm Beach, the FPL Group utility is assembling a life-size Erector Set of 190,000 shimmering mirrors and thousands of steel pylons that stretch as far as the eye can see. When it is completed by the end of the

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-29582246814623743072009-12-04T12:12:00.000-08:002009-12-04T12:14:35.356-08:00

Striving to be faultless can foster failure—or drive success—depending on the type of perfectionist you are David Liu is a technology entrepreneur in San Francisco. He has helped found several start-ups to market products he has developed, including those stylus pens the UPS driver hands you to sign for your packages. But even as he dreams up new inventions, an ongoing patter in his head

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The discovery that compounds known as iron pnictides can superconduct at 50 degrees above absolute zero has reignited physicists' quest for better high-temperature superconductors, and may offer clues to unlocking a 20-year mystery Hideo Hosono's research group at the Tokyo Institute of Technology was not looking for a superconductor in 2006. Rather the team was trying to create new kinds

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com1tag:blogger.com,1999:blog-34085869.post-77693896241180141982009-12-04T11:53:00.000-08:002009-12-04T11:53:18.719-08:00

On Sept. 2, 1859, at the telegraph office at No. 31 State Street in Boston at 9:30 a.m., the operators’ lines were overflowing with current, so they unplugged the batteries connected to their machines, and kept working using just the electricity coursing through the air. In the wee hours of that night, the most brilliant auroras ever recorded had broken out across the skies of the Earth. People

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-49247895591843566782009-07-28T08:46:00.000-07:002009-07-28T09:00:07.582-07:00

It was a natural phenomenon that would have tested the limits of even Mr Muscle.Scientists in Japan have found that clouds generated by a massive dust storm in China's Taklimakan desert in 2007 completed more than one full circle around the planet in just 13 days.And measuring around 1.9 miles vertically and up to 1,242 miles horizontally, the dust cloud - which formed in the northwestern region

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-51829531769635057212009-07-28T08:30:00.000-07:002009-07-28T08:43:18.740-07:00

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-65808246736844342542009-07-28T07:15:00.000-07:002009-07-28T08:29:06.702-07:00

To truly appreciate how glass can be used structurally, make your way to 233 South Wacker Drive in downtown Chicago. More precisely, make your way 1,353 feet above South Wacker, to the 103rd floor of the Sears Tower. Once there, take a few steps over to the west wall, where the facade has been cut away. Then take one more step, over the edge. You’ll find yourself on a floor of glass, suspended

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-48870340735564087582009-07-28T06:18:00.000-07:002009-07-28T07:13:01.051-07:00

Light-reflective dots attached to Emma Phibbs allowed a sophisticated camera system to capture her movement and display it on a monitor at the University of Delaware. Photo: Jessica Kourkounis for The New York Times The system allows researchers to mimic skaters' positions during jumps and calibrate the effect of altering angles of the head, torso, arm and leg.The light-reflective dots were

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-64779273770653812782009-07-27T23:49:00.001-07:002009-07-27T23:57:23.477-07:00

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-9810636801619905232009-07-07T12:15:00.000-07:002009-07-07T12:17:21.056-07:00

Researchers get help from a venerable number theory and a popular puzzle game to solve genetic medical mysteries A 2,000-year-old math theorem, along with Sudoku, may soon help researchers untangle DNA at blazing speeds.Hunting for a particular genetic mutation in hundreds of thousands of specimens can be an expensive and time-consuming process. In the past several years, faster multiplex DNA

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-86998274901859557172009-07-07T12:10:00.000-07:002009-07-07T12:15:11.765-07:00

Scientists are turning agricultural leftovers, wood and fast-growing grasses into a huge variety of biofuels—even jet fuel. But before these next-generation biofuels go mainstream, they have to compete with oil at $60 a barrel By now it ought to be clear that the U.S. must get off oil. We can no longer afford the dangers that our dependence on petroleum poses for our national security, our

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-78989343758766528812009-07-07T12:05:00.000-07:002009-07-07T12:10:53.560-07:00

The melting Arctic is releasing vast quantities of methane. How big is this greenhouse threat? What can be done? A young scientist with curly, reddish hair tucked beneath a knit cap stepped gingerly onto the three-day-old ice of a remote lake in northeastern Siberia. Coating the black depths like cellophane, the thin film held no promise to bear her weight, but a sudden dunk in the frigid water

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-38955242627013957972009-07-07T11:59:00.000-07:002009-07-07T12:05:47.217-07:00

No direct impact caused Paul McQuigg’s brain injury in Iraq three years ago. And no wound from the incident visibly explains why Mr. McQuigg, now an office manager at a California Marine base, can get lost in his own neighborhood or arrive at the grocery store having forgotten why he left home.But his blast injury — concussive brain trauma caused by an explosion’s invisible force waves — is no

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com1tag:blogger.com,1999:blog-34085869.post-54880072259439131452009-07-07T11:56:00.000-07:002009-07-07T11:59:52.426-07:00

"Metal organic frameworks" look like rocks, act like spongesTo capture the carbon dioxide generated by coal plants, chemical companies like Dow Chemical Co. and energy giants like Alstom SA have been betting big on liquid solvents like amine, a corrosive derivative of ammonia that has a thirst for binding with CO2.Problem is, once the two are bound, they never want to part.In an attempt to

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-28558030460046940772009-07-07T11:52:00.000-07:002009-07-07T11:56:18.401-07:00

An object hundreds or thousands of times the mass of the sun would represent an elusive class of black holeBlack holes vary greatly in size, from relatively small ones several times the mass of the sun, which are born of collapsed stars, to supermassive lurkers like the one at the center of our Milky Way Galaxy, with the mass of about four million suns.But medium-size black holes—those with

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-45179340945117970282009-06-08T20:15:00.000-07:002009-06-08T20:40:57.778-07:00

I’m not a biologist, evolutionary or otherwise. In fact, I’m (gasp!) a mathematician. One of the pleasures of looking at the world through mathematical eyes is that you can see certain patterns that would otherwise be hidden. This week’s column is about one such pattern. It’s a beautiful law of collective organization that links urban studies to zoology. It reveals Manhattan and a mouse to be

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-12526632301822962712009-06-08T15:35:00.000-07:002009-06-08T15:42:39.324-07:00

A black 1957 Ferrari 250 Testa Rossa sold here Sunday for $12,402,500, setting a new record for the highest sale price at a public auction. “The car set a new auction world record as the most expensive motor car ever to be sold at auction,” said Amy Christie, a spokeswoman for RM Auctions, which conducted the third annual Ferrari Leggenda e Passione sale.The immaculate machine actually sold for a

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-38143474302836619872009-06-08T15:24:00.000-07:002009-06-08T15:34:33.711-07:00

At the ringing of a bowl-shaped bell, five monks at a remote monastery congregated in the chapel here for the fourth of their seven daily rounds of prayer, their voices murmuring a Gregorian chant in Latin. At the same time, in a nearby house on the monastery’s property, the phone was ringing in a small office where two women and an office manager run a multimillion-dollar business that generates

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-80657724126273692712009-05-26T11:34:00.001-07:002009-05-26T11:37:32.319-07:00

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-3458588817596474782009-05-26T11:24:00.000-07:002009-05-26T11:28:07.113-07:00

As Owen Van Natta, the new chief executive of MySpace, starts his second week at the sprawling social network , he faces an acute demographic problem.While Facebook is adding users, MySpace is losing them. Many user profile pages on MySpace are either cluttered or neglected, resembling a strip mall with pockets of empty storefronts. The users who remain tend to be younger and poorer, putting a

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-4681134666581292842009-05-26T11:19:00.000-07:002009-05-26T11:24:03.439-07:00

Perhaps the real reason you are alone on a Saturday night is because you are in denial. We often think of denial as it pertains to larger issues such as alcohol abuse or mental illness. Yet denial can live in every aspect of our daily lives. There are easy steps to help you realize what you are in denial about, which will lead you to open yourself up to love.We all have insecurities. Our cultural

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-53996820888057721232009-05-26T11:15:00.001-07:002009-05-26T11:19:20.493-07:00

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-76196433811130955372009-05-26T11:08:00.001-07:002009-05-26T11:15:23.545-07:00

The iPod stemmed losses in the music industry. The Kindle gave beleaguered book publishers a reason for optimism.Now the recession-ravaged newspaper and magazine industries are hoping for their own knight in shining digital armor, in the form of portable reading devices with big screens.Unlike tiny mobile phones and devices like the Kindle that are made to display text from books, these new

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-59805305286579007782009-04-28T09:48:00.000-07:002009-04-28T09:58:19.222-07:00

Fresh off one of the worst quarters in company history, Microsoft offered investors little evidence that a beleaguered personal computer market would recover anytime soon.On Thursday, Microsoft set the wrong kind of record, as it reported the first year-over-year quarterly revenue decline since it first sold stock to the public in 1986. In its third quarter, which ended March 31, Microsoft said

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-25218480011112303592009-04-28T09:30:00.000-07:002009-04-28T09:45:47.873-07:00

RealNetworks says it wants to help increase DVD sales by allowing people to copy their movie discs. Hollywood studios say that idea will only hurt their already struggling business. The two sides square off in a federal court here on Friday to determine who prevails.The case is ostensibly about RealDVD, a $30 software program that allows users to save digital copies of Hollywood DVDs to their

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-84496062220139081872009-04-28T09:06:00.000-07:002009-04-28T09:29:43.937-07:00

This highly successful television quiz show is the latest challenge for artificial intelligence.I.B.M. plans to announce Monday that it is in the final stages of completing a computer program to compete against human “Jeopardy!” contestants. If the program beats the humans, the field of artificial intelligence will have made a leap forward.I.B.M. scientists previously devised a chess-playing

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-27050409282087073902009-04-28T08:58:00.000-07:002009-04-28T09:05:55.958-07:00

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-14956254852653467932009-04-27T22:08:00.000-07:002009-04-27T22:54:11.823-07:00

By driving the tides, our lunar companion may have jump-started biology--or at least accelerated its progressionThe ocean tides mirror life itself. Their ebb and flow pay homage to the cyclic nature of the cosmos along even the most secluded seashores. But is life itself also ultimately a fluke of the tides?If so, life may ultimately owe its origins to our serendipitously large moon. The sun and

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-10717460236324263492009-04-27T21:23:00.000-07:002009-04-27T22:05:20.573-07:00

Cooking is crucial to our diets. It helps us digest food without expending huge amounts of energy. It softens food, such as cellulose fiber and raw meat, that our small teeth, weak jaws and digestive systems aren't equipped to handle. And while we might hear from raw foodists that cooking kills vitamins and minerals in food (while also denaturing enzymes that aid digestion), it turns out raw

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-41193106398207020372009-02-26T01:32:00.000-08:002009-02-26T01:40:48.551-08:00

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-2424460294077940582009-02-26T01:23:00.000-08:002009-02-26T01:32:48.632-08:00

In the new issue of Nature, the neuroscientist Larry Young offers a grand unified theory of love. After analyzing the brain chemistry of mammalian pair bonding — and, not incidentally, explaining humans’ peculiar erotic fascination with breasts — Dr. Young predicts that it won’t be long before an unscrupulous suitor could sneak a pharmaceutical love potion into your drink.That’s the bad news. The

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-57641118181519569942009-02-26T01:11:00.000-08:002009-02-26T01:21:20.617-08:00

In 2004, a New Jersey prosecutor announced that DNA had solved the mystery of who killed Jane Durrua, an eighth-grader who was raped, beaten and strangled 36 years earlier."Through DNA, we put a face to the killer of Jane Durrua, and that face belongs to Jerry Bellamy," prosecutor John Kaye said.The killer, however, turned out to be someone else.Two years after Bellamy's arrest, investigators

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-58284023471101069512009-02-26T00:42:00.000-08:002009-02-26T01:11:12.873-08:00

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-56931275299577482682009-02-25T10:59:00.000-08:002009-02-25T11:17:45.957-08:00

Simple Salves for Severe Traumatic Brain Injuries.Low-tech emergency room therapies can stem the damage from traumatic brain injuries.Kirsten Timmons was navigating a frozen overpass one night when a passing car skidded out of control and slammed into her vehicle. As her car came to a stop, Timmons’s head probably snapped around its own axis, decelerating sharply when it struck the seat-belt

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-60459157807342369722009-02-25T10:27:00.000-08:002009-02-25T10:39:02.477-08:00

T. V. RAMAN was a bookish child who developed a love of math and puzzles at an early age.That passion didn’t change after glaucoma took his eyesight at the age of 14. What changed is the role that technology — and his own innovations — played in helping him pursue his interests.A native of India, Mr. Raman went from relying on volunteers to read him textbooks at a top technical university there

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-75412631103302090352009-02-25T09:54:00.000-08:002009-02-25T10:27:36.309-08:00

As a young geophysicist in the 1980s, Rob Holman attended a conference in San Francisco that included a field trip to a beach. Dr. Holman, who grew up inland, in Ottawa, stared at the ocean, assessing the strengths and vectors of the waves and currents. But when he looked around, everyone else was studying the sand.He realized, he recalled, that “sand is not the same everywhere.” So he started

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-75469393249567847792009-02-25T09:45:00.000-08:002009-02-25T09:51:53.099-08:00

In December, hundreds of these controversial software developers gathered for one week at the Google headquarters in Mountain View, Calif. They came from all over the world, sporting many of the usual signs of software mercenaries: jeans, ponytails, unruly facial hair and bloodshot eyes.But rather than preparing to code for the highest bidder, the developers were coordinating their largely

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-18020570833009847312009-01-12T14:12:00.000-08:002009-01-12T14:19:51.990-08:00

The imminent full-bore return to 3-D filmmaking, upon which the movie industry is placing many of its hopes, is in danger of becoming Hollywood’s latest flub.(LOS ANGELES)Some of the mightiest forces in film — Jeffrey Katzenberg, James Cameron, John Lasseter — think the multiplex masses will soon demand that all movies be shown in newly available digital 3-D. Mr. Katzenberg, in particular, has

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-35406451246483803232009-01-12T13:58:00.000-08:002009-01-12T14:11:29.220-08:00

The man, a doctor left blind by two successive strokes, refused to take part in the experiment. He could not see anything, he said, and had no interest in navigating an obstacle course — a cluttered hallway — for the benefit of science. Why bother?When he finally tried it, though, something remarkable happened. He zigzagged down the hall, sidestepping a garbage can, a tripod, a stack of paper and

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-65191435824412876852009-01-12T13:48:00.000-08:002009-01-12T13:57:21.676-08:00

Oymyakon, Siberia, is bracing for temps as low as minus 90 degrees Fahrenheit (minus 67.8 degrees Celsius)As winter sets in, the 800 hearty denizens of the coldest town on earth are bracing for one of the most frigid blasts yet, as forecasters predict that temperatures in Oymyakon, Siberia, could plunge to the coldest ever recorded in an inhabited location. There is no disputing that the mercury

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-62447852647558239112009-01-12T13:39:00.001-08:002009-01-12T13:47:10.132-08:00

The first French woman in space has been hospitalized after she tried to take her own life, according to published reports.Claudie Haignere, 51, was hospitalized late yesterday after she tried to commit suicide, an unidentified French government source told Agence France-Presse. Another source told AFP that Haignere overdosed on pills.Haignere, a rheumatologist, flew to the MIR space station as

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-31376370824930575682009-01-12T11:33:00.000-08:002009-01-12T11:43:58.295-08:00

People who work in politics have always had to worry about what they did before they worked in politics. But the sheer size and popularity of Facebook—140 million active users, at least 139.99 million of whom have been photographed drunk at a college party—present budding politicians (and budding political operatives) with a dilemma: How do they keep those pics from showing up on the front page?

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-47676230377726340962009-01-12T11:19:00.000-08:002009-01-12T11:33:06.648-08:00

We are used to thinking of humans as occupying the sole pinnacle of evolutionary intelligence. That's where we're wrongWe were talking about politics. My housemate, an English professor, opined that certain politicians were thinking with their reptilian brains when they threatened military action against Iran. Many people believe that a component of the human brain inherited from reptilian

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-11041272432582659862009-01-11T18:35:00.000-08:002009-01-11T18:42:33.951-08:00

Some evolutionary psychologists have made widely popularized claims about how the human mind evolved, but other scholars argue that the grand claims lack solid evidence.Charles Darwin wasted no time applying his theory of evolution to human psychology, following On the Origin of Species (1859) with The Descent of Man (1871) and The Expression of the Emotions in Man and Animals (1872). Ever since,

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-69241612863925839862009-01-06T07:10:00.000-08:002009-01-06T07:18:25.471-08:00

NASA yesterday gave two companies the job of resupplying the International Space Station after the space shuttle retires, picking Orbital Sciences of Dulles and SpaceX of Hawthorne, Calif., for a $3.5 billion contract.NASA says the deal is a milestone for the agency as part of its effort to encourage companies to get more involved in space transport and it was seen as a major win for two

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-15589055215359270662008-12-24T10:33:00.000-08:002008-12-24T12:03:21.961-08:00

I’M a reporter and I write about the Internet. I write about its culture, its latest developments and the people and companies involved. You may think this means I spend a lot of time watching videos of advice-dispensing ninjas and funny photographs of cats but that, sadly, is not the case.What I do spend a lot of time doing is scouring the Internet for information and news. This is great because

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com2tag:blogger.com,1999:blog-34085869.post-27148905387984378052008-12-24T10:25:00.000-08:002008-12-24T12:05:04.967-08:00

Meltdown. Collapse. Depression. Panic. The words would seem to apply equally to the global financial crisis and the effect of that crisis on the human psyche.Of course, it is too soon to gauge the true psychiatric consequences of the economic debacle; it will be some time before epidemiologists can tell us for certain whether depression and suicide are on the rise. But there’s no question that

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-45881878186365296072008-12-21T04:04:00.000-08:002008-12-21T04:28:33.542-08:00

IT sounds like a plot straight out of a science-fiction novel by Michael Crichton. Toiletry companies formulate new cutting-edge creams and lotions that contain tiny components designed to work more effectively. But those minuscule building blocks have an unexpected drawback: the ability to penetrate the skin, swarm through the body and overwhelm organs like the liver.Humans have long lived in

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-70656622491235024302008-12-21T04:00:00.000-08:002008-12-21T04:03:55.764-08:00

The surprising news made headlines in December 2002. Generic pills for high blood pressure, which had been in use since the 1950s and cost only pennies a day, worked better than newer drugs that were up to 20 times as expensive.The findings, from one of the biggest clinical trials ever organized by the federal government, promised to save the nation billions of dollars in treating the tens of

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-36042866657898044482008-12-21T03:34:00.000-08:002008-12-21T04:00:06.743-08:00

An intact skeleton of a woolly mammoth on display at the Carnegie Museum of Natural History in Pittsburgh. (S. C. Schuster)Last week, the woolly mammoth came back.Into the news, that is. For it has had its genome sequenced, and is the first extinct animal to have done so.The sequence is a draft — for technical reasons, parts of it are likely to be inaccurate — and it is not yet complete. But that

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-89554050231833583632008-12-21T03:19:00.000-08:002008-12-21T03:34:08.185-08:00

Travelers to Africa and Asia all have their favorite forms of foreign aid to “make a difference.” One of mine is a miracle substance that is cheap and actually makes people smarter.Unfortunately, it has one appalling side effect. No, it doesn’t make you sterile, but it is just about the least sexy substance in the world. Indeed, because it’s so numbingly boring, few people pay attention to it or

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-26182415091546950282008-12-21T03:09:00.000-08:002008-12-21T03:19:13.091-08:00

“It’s a little plastic toy,” said Jessica Fridrich, tossing a Rubik’s Cube between her long-fingered hands on a stormy afternoon in her office at Binghamton University, her fingernails painted with a pastel pink gloss.MATH AS METHOD Jessica Fridrich’s strategy for quickly solving the Rubik’s Cube requires using at least 53 algorithms.But the little toy, an icon of the era of Pac-Man and high-top

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-13150254902994936872008-12-21T02:51:00.000-08:002008-12-21T03:08:39.171-08:00

In 1945, after the atomic destruction of two Japanese cities, J. Robert Oppenheimer expressed foreboding about the spread of nuclear arms.“They are not too hard to make,” he told his colleagues on the Manhattan Project at Los Alamos, N.M. “They will be universal if people wish to make them universal.”That sensibility, born where the atomic bomb itself was born, grew into a theory of technological

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-78054643860957820102008-12-21T02:21:00.000-08:002008-12-21T02:50:13.462-08:00

As she squeezed herself into a telephone-booth-size elevator to ascend a 984-foot tower in Colorado’s eastern plains, Arlyn Andrews said with a grin, “This makes me want to go rock climbing.”Kevin Moloney for The New York TimesTALL TOWERS The 984-foot tower, left, and the view from atop the tower.It’s a good thing she loves climbing tall structures. Dr. Andrews, an atmospheric scientist at the

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-58185655282506684712008-12-21T02:06:00.000-08:002008-12-21T02:21:11.957-08:00

In Nicholas Roy’s robotics laboratory at the Massachusetts Institute of Technology, fake things looked real and real things looked fake. GREEN ‘THUMBS’ In a class at the Massachusetts Institute of Technology, a robot will water a tomato plant when the plant makes a request. The plot of a half-dozen or so plants is serviced entirely by robots.Standing amid a pile of clutter on the floor was a

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-35268487041795740422008-12-21T01:57:00.000-08:002008-12-21T02:05:06.916-08:00

Andrew J. McKelvey, a serial entrepreneur who in his early 60s jumped into Internet commerce as the executive who built Monster.com into the leading job recruitment Web site, died on Thursday at his home in Manhattan. He was 74.The cause was pancreatic cancer, his daughter Christine McKelvey said.Before his work with Monster.com, Mr. McKelvey created a company called Telephone Marketing Programs,

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-31227217269395359852008-12-21T00:54:00.000-08:002008-12-21T01:57:20.967-08:00

Is this the dark side speaking?HIGH STAKES Inflating a balloon that may have detected a sign of dark matter annihilation.A concatenation of puzzling results from an alphabet soup of satellites and experiments has led a growing number of astronomers and physicists to suspect that they are getting signals from a shadow universe of dark matter that makes up a quarter of creation but has eluded

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-62442846144998612502008-12-21T00:26:00.000-08:002008-12-21T00:52:37.117-08:00

The first 700 million years of Earth’s 4.5-billion-year existence are known as the Hadean period, after Hades, or, to shed the ancient Greek name, Hell.AGES AGO Analyses of crystals in rocks in Australia, left, have formed a new picture of the early Earth, depicted with young oceans in the painting at right.That name seemed to fit with the common perception that the young Earth was a hot, dry,

Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-60403040813576029282008-11-22T00:51:00.000-08:002008-11-22T01:02:50.753-08:00

I owe an apology to my genes. For years I offhandedly blamed them for certain personal defects conventionally associated with one’s hereditary starter pack — my Graves’ autoimmune disease, for example, or my hair, which looks like the fibers left behind on the rim of an aspirin bottle after the cotton ball has been removed, only wispier.Now it turns out that genes, per se, are simply too feeble

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Carlos Tigre sin Tiempohttp://www.blogger.com/profile/09264891953340695024noreply@blogger.com0tag:blogger.com,1999:blog-34085869.post-68007086059250747722008-11-22T00:36:00.000-08:002008-11-22T00:44:33.553-08:00

Last week, NASA released a newly restored image of a younger Earth. It was taken from Lunar Orbiter 1 in 1966, the first of several orbiters that helped gather data for the first moon landing in 1969. The photograph shows Earth just cresting the Moon’s curving horizon, the first picture of our planet framed by the surface of the Moon.When the photograph was published, in 1966, it looked like a

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Steven J. Wallach is completing the soul of his newest machine.Thirty years ago, Mr. Wallach was one of a small team of computer designers profiled by Tracy Kidder in his Pulitzer Prize winning best seller, “The Soul of a New Machine.”It was Mr. Wallach, then 33, who served as the architect and baby sitter for his “microkids,” the young team that designed the Data General MV 8000, the underdog

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Over the summer, Sonja Prohaska decided to try an experiment. She would spend a day without ever saying the word “gene.” Dr. Prohaska is a bioinformatician at the University of Leipzig in Germany. In other words, she spends most of her time gathering, organizing and analyzing information about genes. “It was like having someone tie your hand behind your back,” she said.But Dr. Prohaska decided

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People whose bodies make an unusually active form of a certain protein tend to have dangerously high levels of cholesterol. Those with an inactive form of the protein have low cholesterol and a low risk of heart attacks.Needless to say, pharmaceutical companies would love to find a drug that can attach itself to the protein and block its activity. That might be difficult for this protein, which

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