AP - If you can't stand global warming, get out of the tropics. While the most significant harm from climate change so far has been in the polar regions, tropical plants and animals may face an even greater threat, say scientists who studied conditions in Costa Rica.

AP - Scientists have confirmed the second case of a "virgin birth" in a shark.

SPACE.com - A NASA spacecraft is set to make the closest flyby yet of an icy moon of Saturn on Thursday.

AP - City officials have agreed to return hundreds of firearms that police officers confiscated in the aftermath of Hurricane Katrina, part of a deal to resolve a lawsuit filed by gun lobbying groups.

AP - Three U.S.-based scientists won a Nobel Prize on Wednesday for turning a glowing green protein from jellyfish into a revolutionary way to watch the tiniest details of life within cells and living creatures.

AP - Famed scientist Richard Leakey warned that the worldwide credit crisis will be "just devastating" to scientific research in coming years, as endowment interest income drops and companies cut donations.

Reuters - Plummeting car sales, climate change, high oil prices and the threat of global recession. The answer? Free electric cars.