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First Signs of Ozone-Hole Recovery Spotted

The hole in the ozone layer over Antarctica is starting to heal, say researchers in Australia. The team is the first to detect a recovery in baseline average springtime ozone levels in the region, 22 years after the Montreal Protocol to ban chlorofluorocarbons (CFCs) and related ozone-destroying chemicals came into force...

from Nature News

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Microbial Mats May Have Given Early Animals Breathing Room

Like exhausted nightclubbers, early animals may have weathered their harsh lifestyle by squirming up to the oxygen bar...

from Science News

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Early Retrovirals Dramatically Reduce Spread of HIV

A multinational study has led to a discovery that could help slow the spread of HIV. ...

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Gamma-Ray Image Reveals 'Some Things We Didn't Expect to See'

Last week astronomers released the most detailed gamma-ray map of the sky--representing the Universe's most violent and extreme processes. The Fermi space telescope's newest results, as well as the map, were described at the Third Fermi Symposium in Rome. ...

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More Setbacks at Japanese Nuclear Plant

Japanese officials said last week that a reactor at the crippled nuclear plant there has been more badly damaged than originally thought, operator Tepco has said. Water is leaking from the pressure vessel surrounding reactor 1--probably because of damage caused by exposed fuel rods. Contaminated water had also entered the sea from a pit near reactor 3 but this has been stopped. ...

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Science at the Top of the News for May 8-13

The most-viewed item by subscribers to Science in the News Daily last week was a New York Times report on what happened to Air France Flight 447, which went down in the Atlantic in June 2009. Other top stories included news of a hidden organ in the eye that controls emotions and circadian rhythms and an interview with famed physicist Stephen Hawking. Subscribe now for free daily updates.

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Youthful Ingenuity Honored at Intel ISEF

LOS ANGELES -- Cancer-killing X-rays, nuclear threat detection and a fishy new plastic were behind the projects that took top awards at the 2011 Intel International Science and Engineering Fair. In addition to those top winners, hundreds of students took over $4 million in awards and prizes home from a May 13 awards ceremony.

from Science News

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PODCASTS: Expanding With the Cosmos

Using the Atacama Cosmology Telescope (ATC), a 6.5-meter microwave collector in Chile, cosmologists are piecing together the early history of the known universe. In an exclusive American Scientist interview, Arthur Kosowsky—a member of the ATC team and a professor in the Department of Physics and Astronomy at the University of Pittsburgh—discusses how he is using ATC to reach back in time billions of years to search for gravitational waves that could verify inflation and reveal unprecedented details about how the cosmos was born.

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