A killer rabbit, jousting bear and Robin Hood walk into a bar: Ancient manuscript reveals new details on medieval comedy

People dressed with Medieval garbs wait to see a reenactment of a tournament of knights fight, in Agincourt, northern France, Saturday, July 25, 2015. (AP Photo/Thibault Camus) People dressed with Medieval garbs wait to see a reenactment of a tournament of knights fight, in Agincourt, northern France, Saturday, July 25, 2015. (AP Photo/Thibault Camus)

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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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