Ukraine aide proposes post-war demilitarized zone in Russia

A woman with a poster attends a demonstration along the street near the Russian embassy to protest against the escalation of the tension between Russia and Ukraine in Berlin, Germany, Tuesday, Feb. 22, 2022.  (AP Photo/Markus Schreiber) A woman with a poster attends a demonstration along the street near the Russian embassy to protest against the escalation of the tension between Russia and Ukraine in Berlin, Germany, Tuesday, Feb. 22, 2022. (AP Photo/Markus Schreiber)

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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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