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Astronaut Scott Kelly's identical twin pulled a fast one on NASA right before his brother blasted off on a one-year space station mission.
The small Lego machine inside the White House whirred, and in a moment it was turning the pages of a story book. One page flipped, then another, ever ...
President Barack Obama is looking for a few smart ideas from the science and technology fields that could help address the challenge posed by Ebola.
John Holdren news and stories
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