AllMovie

The 2009 mission to repair the Hubble space telescope, which required intensive spacewalks; the whys of the cowbird, which lays its eggs in other birds' nests. Also: a profile of Dr. Alfredo Quiñones-Hinojosa, a Johns Hopkins neurosurgeon who illegally entered the U.S. in 1987 in search of farm work; and the story of Henry Molaison, who suffered severe short-term memory impairment after having part of his brain removed during an experimental procedure to stop severe epileptic seizures.