When Dublin scientist Emma Murphy got word that a dead Greenland shark had washed up on the shores of northwestern Ireland, she was gobsmacked. Not only are the massive and ancient ocean dwellers notoriously elusive, but they usually make their homes in the remote depths of the Arctic and North Atlantic oceans.

An unusually large troop of chimpanzees displayed cooperation and social cohesion for decades, until something shifted and they started to turn on each other.

Jeremy Hansen sat down with CBC News to share some of his insights, like how he felt during lift-off, the joy the mission brought him, and that one time he accidentally let a water bag explode in the capsule.