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NOVA scienceNOW Season 4 #407 1x53

The Hubble Space Telescope — an orbiting eye on the universe that has greatly advanced our knowledge of the cosmos — is in need of repairs never intended to be performed in orbit. Neil deGrasse Tyson takes us to the NASA Goddard Space Flight Center, where the cameras are given special access to the astronauts training for one of the most complex missions ever attempted.

Watch out: cowbirds might make you an offer you can’t refuse.  These common backyard birds have a dark secret, and ecologist Jeff Hoover has stumbled on a clue that might unravel the most brutal reign of terror in the avian world.

It’s been two decades since Alfredo Quinones-Hinojosa jumped the border fence separating Mexico and the US and established himself as a farm worker in southern California. Today he’s an assistant professor of neurosurgery and oncology at Johns Hopkins University, where he is in hot pursuit of a breakthrough in the treatment of brain cancer.

For much of his life Henry Molaison was unable to form new memories. Suffering from severe epilepsy, Molaison underwent a risky treatment that fixed his epilepsy but caused severe memory impairment. Subsequently, Henry allowed dozens of researchers to question and test him. Now, though no longer living, Molaison’s brain is the subject of still more scrutiny, helping to create the most detailed map of memory in the brain yet.