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Fatherhood Lowers Testosterone, Keeps Dads at Home

Men may not go on a hormonal rollercoaster with their pregnant partners, but once the baby shows up, their bodies biologically transition into "daddy mode," suggests a new study finding that levels of testosterone, the "macho" sex hormone, drop in new fathers. "Men are, to a certain degree, hardwired to take care of their kids," study researcher Lee Gettler, of Northwestern University in Chicago, Illinois, told LiveScience. "This is important because traditional models of human evolution have portrayed women as the gatherers that take care of the kids and stay behind." [More]

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‘Super-Earth,’ 1 of 50 Newfound Alien Planets, Could Potentially Support Life

More than 50 new alien planets -- including one so-called super-Earth that could potentially support life -- have been discovered by an exoplanet-hunting telescope from the European Southern Observatory (ESO). The newfound haul of alien planets includes 16 super-Earths , which are potentially rocky worlds that are more massive than our planet. One in particular - called HD 85512 b - has captured astronomers' attention because it orbits at the edge of its star's habitable zone, suggesting conditions could be ripe to support life

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Germany Learns from E. Coli Outbreak

By Marian Turner of Nature magazine Germany aims to shorten the time it takes for information on infectious-disease outbreaks to reach federal authorities from up to 18 days to just three, after this year's outbreak of enterohemorrhagic Escherichia coli killed 53 people. [More]

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Satellite Set to Make Big Splash or Thud

Look out below! A defunct satellite the size of a school bus is falling back to Earth. NASA's Upper Atmosphere Research Satellite, or UARS , is expected to reenter the atmosphere at the end of September.

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Secret Lives of Plankton Revealed in Microscopic Glory

Microscopic algae and the nearly invisible animals that eat them do more than just drift along the ocean surface. Plankton , defined by their habitat, not their taxonomy, are the foundation of the marine food chain--without them, marine life would go hungry and food chains would collapse. They also remove carbon dioxide from the sea and provide Earth's atmosphere with oxygen

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Explosion at French nuclear site kills one, no leak

MARSEILLE, France, Sept 12 (Reuters) - A furnace exploded at the Marcoule nuclear waste treatment site in southern France on Monday, killing one person, but there was no leak of radioactive material outside the furnace, France's ASN nuclear safety watchdog said. Four other people were injured, one seriously, in the blast at the Centraco site, owned by French power utility EDF and adjacent to the Marcoule nuclear research centre. [More]

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Need a Break? Try Nature

Stressed out by the tenth anniversary of 9/11 , the double-dip recession or just the day to day grind of modern life? Need a break

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After Shock and Awe

Since the attacks of September 11, Congress has approved nearly $1.3 trillion for military spending. Much of that money has gone into mounting Operation Enduring Freedom in Afghanistan and Operation Iraqi Freedom. But some of the funds have been used to dream up and develop futuristic-sounding military devices such as exoskeletons

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