domingo, 17 de julio de 2011

Science review


Scientists Fight a Deadly Oak-Tree Disease

Sudden oak death, a killer disease, is attacking coastal oak trees. But scientists have found one healthy swath of forest that could be the perfect laboratory for a preventive treatment.

Food Companies Act to Protect Consumers From E. Coli Illness

Tired of waiting for federal regulators to act, Costco and Beef Products Inc. are requiring broader testing for more strains of the bacteria in their food.

No Vacancies, but Some Reservations

The Gulf Coast is on the rebound, with families like Nolan White's back on the beach, and BP has taken notice.
Meggan Haller for The New York Times
The Gulf Coast is on the rebound, with families like Nolan White's back on the beach, and BP has taken notice.
BP says the formula used to determine compensation for businesses hurt in last year’s spill is too generous.
GREEN BLOG
An adult female Borneo rainbow toad, also known as the Sambas stream toad (Ansonia latidisca), which is about 51 mm long.

After 8 Decades, Tiny Toad Resurfaces in Asia

A research team tracks down the tree-dwelling Borneo rainbow toad in an area along the Malaysia-Indonesia border that had formerly been inaccessible.
Two adult male baboons fighting at close range.

Baboon Study Shows Benefits for Nice Guys, Who Finish 2nd

Alpha males may hold power and attract females, but a study of baboon troops in Kenya shows they also have very high levels of stress.
The browning needles on Imprelis-treated trees in Lancaster, Pa., left, and right, those of Ms. DaPrato's tree.

New Herbicide Suspected in Tree Deaths

The product, Imprelis, was hailed as environmentally friendly but is now a suspect in thousands of fallen trees.

Internet Use Affects Memory, Study Finds

Subjects were more likely to remember information that they would not be able to retrieve from a computer.

Genetic Code of E. Coli Is Hijacked by Biologists

Harvard researchers devised a method for making hundreds of changes in the bacterium’s genome simultaneously, paving the way to replace the deleted genetic function with another.
In Albany last week, groups protested a decision to explore gas drilling at the Marcellus Shale.

Latest Drilling Rules Draw Objections

Environmental groups say that New York State has moved toward a safer plan regulating the form of drilling known as hydrofracking, but that it is still coming up short.
Science Times: July 12, 2011
AT YOUR SERVICE A robot programmed at the University of California, Berkeley, folds laundry — very slowly.
AT YOUR SERVICE A robot programmed at the University of California, Berkeley, folds laundry — very slowly.
They can crank out cars, conduct surgery and win on “Jeopardy!” But in challenges of perception and motion that humans handle effortlessly, robots have a long way to go.

Scientists Turn to Crowds on the Web to Finance Their Projects

As research budgets tighten, a new crop of Web-savvy scientists is hoping the wisdom and generosity of crowds will come to the rescue.
HABITAT The use of a herbicide has taken away a home for monarchs.

In Midwest, Flutters May Be Far Fewer

While the evidence is still preliminary and disputed, some experts say the growing use of genetically modified crops is threatening the butterfly by depriving it of habitat.
ON VIEW
ART AND SCIENCE The exhibit has more than 20 sets of images. Among them are a goblin spider carapace, left, and several views showing mineral composition in part of a meteorite.

Specialized Windows on the Natural World

The American Museum of Natural History is putting on an exhibit of large-format images, many taken with advanced technology.
Health
Gilead Sciences' Truvada cut the odds of becoming infected.

Two Studies Show Pills Can Prevent H.I.V. Infection

Trials conducted in Africa were the first to show protection in heterosexuals whose partners had H.I.V.
  • Health Guide: AIDS »
  •  The Takeaway: Donald McNeil speaks about a pill that can prevent H.I.V. infection.

Drive to Stem Shingles Meets Few Expectations

As a result of myriad obstacles, just 10 percent of adults over age 60 were vaccinated against shingles in 2009 in the United States.
More Multimedia

INTERACTIVE GRAPHIC: 30 Years of the Space Shuttle

An interactive timeline of the 135 space shuttle missions.

VIDEO: Nora Volkow

An interview with the neuroscientist in charge of the National Institute on Drug Abuse, who also happens to be the great-granddaughter of Leon Trotsky.

INTERACTIVE FEATURE: What Makes Music Expressive?

What makes music expressive? Quiz yourself based on new research.

Rock-Paper-Scissors: You vs. the Computer

Test your strategy against the computer in this rock-paper-scissors game illustrating basic artificial intelligence.

‘Here on Earth: A Natural History of the Planet’

While detailing the great harm done by humans, Tim Flannery also writes hopefully about the earth’s future.
SCIENTIST AT WORK BLOG
The handsome spotted Damba, Paretroplus maculatus, formerly one of the most common of the Dambas, is now extirpated from most of its former range.

Returning Upriver With Very Few Fish

Despite being located within a popular and important national park in Madagascar, a critical habitat for a number of rare endemic fishes has been devastated.
Science Columns
OBSERVATORY

To Survive Ice Ages, Gray Whales Adapted

A study says that until the whaling industry depleted their ranks, California gray whales thrived for millions of years during ice ages that cut off their migration routes and compromised their diets.
OBSERVATORY
Infrared image of the Large Magellanic Cloud supernova detected in 1987.

Cosmic Dust, Detected in Colossal Quantities

With the aid of the European Space Agency’s Herschel Space Observatory, astronomers detected enough cosmic dust, emitted from a supernova first seen almost 25 years ago, to form 200,000 Earths.
OBSERVATORY
Diversity is seen in jaw fossils from fish 400 million years ago.

Simpler Fish Held On Long Past Jaws’ Arrival

A study suggests that even after sophisticated jaw types emerged, fish with and without them coexisted for at least 10 million years.
Q & A

What Makes Teeth Chatter

There are several kinds of involuntary jaw movements, and it is important to distinguish chattering from grinding.
Podcast: Science Times
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This week: Designing robots, depending on the kindness of strangers, and jaws, the prequel.
Health Columns
PERSONAL HEALTH

Water Holds Pleasures, and Menaces That Lurk

Unseen pollutants can cause ailments of the ears, eyes, skin, nervous system, gastrointestinal and respiratory tracts, and any cut or scratch you may have.
REALLY?

The Claim: A Tennis Ball to Cut Snoring

Attaching a tennis ball to the back of one's pajamas may thwart back sleeping, but it does not appear to significantly reduce snoring.

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