domingo, 1 de mayo de 2011

ciencia

A Delicacy on Chinatown Plates, but a Killer in Water

By LIZ ROBBINS and JEFFREY E. SINGER

New York State Department of Environmental Conservation

The snakehead fish is prized for its healing properties in China, but has been illegal to import to the United States since 2002.

Officials this week arrested a Brooklyn vendor suspected of importing the illegal snakehead fish, a rapidly reproducing predator with such a voracious appetite it can wipe out entire schools of fish and destroy an ecosystem.

Toshiso Kosako quit as a nuclear adviser and criticized the government.

Japan’s Prime Minister Defends Handling of Crisis

By MARTIN FACKLER

Naoto Kan’s remarks came after an adviser resigned to protest what he called unsafe measures.

Skater Brings ‘a Little Smile to the People of Japan’

A System to Speed Up Forecasting Tornadoes

By SARAH WHEATON

The Dallas-Fort Worth area is poised to test a system of weather forecasting based on a series of small radar devices that would replace a single Doppler monitor.

Court Lets U.S. Resume Paying for Embryo Study

By GARDINER HARRIS

Two federal appeals court judges ruled that the syntax of the law restricting such research left room for financing of work on stem cells created from embryos that were destroyed in the past.

Electrical Problems Force Delay in Shuttle Launching

By HENRY FOUNTAIN

Endeavour’s mission was postponed for at least three days for repairs to a system that powers the movement of the shuttle’s engines and flaps.

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TITUSVILLE JOURNAL

Twelve miles from the Kennedy Space Center, Titusville, Fla., has provided shuttle mission souvenirs and memorabilia, as well as places to view launchings.

In Shuttle’s Waning Days, One of the Last Reasons to Cheer

By HENRY FOUNTAIN

As the countdown for Endeavour liftoff, the next-to-last shuttle flight, approaches, communities near the Kennedy Space Center prepare for the big day.

Slide Show: A Shuttle Town's Boom and Bust

The Energy Department issued the first nuclear loan guarantee for the expansion of the Alvin W. Vogtle plant in Georgia.

Despite Bipartisan Support, Nuclear Reactor Projects Falter

By MATTHEW L. WALD

The depressed price of natural gas has clouded the economics of new reactors, and the disaster in Japan has further weakened support for building plants.

Solar panels along Fifth Street in Fair Lawn, N.J. Residents elsewhere were upset they had not been notified before installation.

Solar Panels Rise Pole by Pole, Followed by Gasps of ‘Eyesore’

By MIREYA NAVARRO

Installations have been popping up across New Jersey for about a year, but some residents worry aloud about the effect on property values.

The First Stars, Massive and Fast-Spinning

By THE ASSOCIATED PRESS

The first stars that dotted the universe were not only immense, but probably also fast-spinning, according to a new study that sheds light on the nature of stellar evolution.

Science Times: April 26, 2011

Digging Deeper, Seeing Farther: Supercomputers Alter Science

By JOHN MARKOFF

Jim Wilson/The New York Times

DUET "Life: A Cosmic Journey" relies not just on computer animation techniques, but on a wealth of digitized scientific data as well.

Computer power is transforming the sciences, giving scientists tools as important to current research as the microscope and telescope were to earlier scientists.

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FINDINGS

A Generation’s Vanity, Heard Through Lyrics

By JOHN TIERNEY

After a computer analysis of three decades of hit songs, psychologists report finding a statistically significant trend toward narcissism and hostility in popular music.

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SCIENTIST AT WORK | JESSE H. AUSUBEL

A Passion for Nature, and Really Long Lists

By NICHOLAS WADE

An environmental researcher has so far started four major international programs to survey the planet and catalog its biological diversity.

M.I.T. Media Lab Names a New Director

By JOHN MARKOFF

Joichi Ito is a 44-year-old Japanese venture capitalist who does not have a college degree but has worked with several Internet organizations and invested in start-ups.

GROWTH SWITCH The Hippo gene restraints the proliferation of heart cells in mice, left. Knock it out, and a heart grows to two and a half times bigger.

Hippo, Warts and Other Thugs of the Genetic Realm

By NICHOLAS WADE

Genes with colorful monikers may play a part in treating cardiac events.

Marc Hauser, a Harvard biologist, has been banned from teaching at the university, but the replication of his 2007 experiment supports his denial of any scientific misconduct.

A Journal’s Statement May Aid a Harvard Researcher Accused of Misconduct

By NICHOLAS WADE

The journal Science said Monday that Marc Hauser, the Harvard researcher whom the university accused last year of eight charges of scientific misconduct, has replicated an experiment he published in 2007.

Health News

Dr. Claudia Henschke led a study that backed cancer screening.

Review Casts More Doubts on a Lung Cancer Study

By GARDINER HARRIS

A confidential review of a continuing lung cancer study involving more than 50,000 patients found that doctors could not locate 90 percent of the patients’ consent forms.