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Elephants Have a Concept of Self, Study Suggests
Astronauts Will Fix Hubble Telescope
Exploring Tennessee's Caves for New Species
Red Cross Bids to Be Leaner, More Efficient
Report: Climate Change Weighs on Economy
Marketplace Report: Britain Sounds Climate Alarm
Previewing 'Science Out of the Box'
America's Weight Gain Drives Up Fuel Consumption
Protecting the Spineless from Extinction
Cactus Moth Threatens Mexico's Nopal Crops
Scientists Use Bee Genes to Understand Behavior
OPEC Tightens Taps to Shore Up Oil Prices
Emission Proposals May Help Katrina-Hit Refineries
Huge 'Terror Bird' Fossil Discovered in Patagonia