 The mysterious sudden brightening and wavelike movements of the aurora borealis, also called the Northern Lights, are caused by periodic explosions of magnetic energy 80,000 miles above Earth, NASA researchers reported. (By M. Scott Moon -- Associated Press)
Department of Human Behavior
Washington Post staff writer Shankar Vedantam writes about the sociology and psychology behind news events. Science Travel
The Washington Post Sunday Magazine's Spring Travel Issue focuses on exploring the animal kingdom.
• Whales: Big Love • Butterflies: Wings and a Prayer • Buffalo: Prairie Home Companions 
The frozen landscape, dry valleys and active volcanoes that make up Antarctica provide a living laboratory for scientific study and a wondrous journey for those traveling to the ends of the Earth. Experience the continent with this special report.
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Trarnscript
Science: Searching for Extraterrestrial Life
Washington Post staff writer Marc Kaufman was online with planet-hunter Paul Butler, to discuss the search for alien life.
Warming Alters Predator-Prey Balance
Scientists tracking wolves in world's longest-running "single predator-single prey" study fear that the Isle Royale, Mich. wolves could become extinct because of global warming.
More Science Headlines
On the Money Trail, Twice the Challenge: In Debt, Clinton Seeks New Donors While Urging Old Ones to Back Obama (Post, July 27, 2008; Page A10)
AIDS Funding Binds Longevity of Millions to U.S.: Open-Ended Commitment of Money Is Implied (Post, July 26, 2008; Page A01)
Search for Alien Life Gains Impetus (Post, July 20, 2008; Page A01)
Discoveries Out There Require Preparation Right Here (Post, July 20, 2008; Page A10)
Older Americans Happier Than Thought: - (Post, July 14, 2008; Page A04)
Sports Parents
Go Berserk (By Shankar Vedantam, July 14, 2008; Page A02)
USDA Rule Change May Lead To Crops on Conserved Land (Post, July 11, 2008; Page A02)
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