Markham puts up signs after dead geese test positive for avian flu

A sign advising the public about suspected avian flu is seen at a pond in Markham. A sign advising the public about suspected avian flu is seen at a pond in Markham.

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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.