U.S. teacher shot by 6-year-old speaks out for the first time

In this undated photo provided by her family and lawyers, Abigail Zwerner, a first-grade teacher at Richneck Elementary School in Newport News, Va., is shown inside her classroom. (Family of Abigail Zwerner via AP, File) In this undated photo provided by her family and lawyers, Abigail Zwerner, a first-grade teacher at Richneck Elementary School in Newport News, Va., is shown inside her classroom. (Family of Abigail Zwerner via AP, File)

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How the lack of gravity in space impacts astronauts’ brain

What happens to the brain when you take gravity away? According to a new study looking at astronauts both before and after space travel, that experience causes physical changes that researchers believe requires at least three years between longer missions to recover from.

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