by Sarah Laskow. Exxon could lose its lease on one of its biggest oil finds ever. Bill McKibben explains why Keystone XL protesters will wear Obama '08 buttons . Isn’t there s ome place to put a big wind farm that won't threaten endangered species of birds? (Spoiler: No. Or anyway, not South Texas.) Oil and gas companies are looking for a bounty in Greenland . Fifteen million pounds of leftover fat from alligator meat gets thrown away each year (really! People apparently eat that many alligators!), but it could be processed into biofuels .

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Critical List: Exxon could lose a big Gulf oil lease; alligator fat makes good biofuel

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