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The study provides the first isotopic evidence that the moon formed from a collision between Earth and a mysterious planetary object.

In mid-June, two months after the 20 April blowout of BP’s Deepwater Horizon drilling rig, the resulting oil plume had reached huge proportions, peer-reviewed research published 19 August on the Science Express Web site suggests.

Efforts to halt underage drinking often focus on peer pressure and the prevention of risky behaviors, but AAAS is undertaking a new federally funded project to give middle-school children a science-based understanding of what can happen to them if they use alcohol.