Dec 29

Humans aren't the only species that tend to belt out a drunk song or two after consuming alcohol -- songbirds will get in on the act as well. But first, scientists had to get them drunk.

New estimates suggest BP's ruptured well may have spewed twice as much oil into the Gulf of Mexico before it was capped than previously thought, raising new questions about cleanup and restoration efforts. Judy Woodruff has an update on the…

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