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Full Program: Probe animal morality, the "swarm intelligence" of a beehive, and more. 53:37
A presidential signature reveals a key Civil War practice history textbooks often overlook 09:46
In the Spring of 1854, fugitive slave Anthony Burns sat in Boston's city jail. 02:55
Full Program: If you like this, support your local PBS station: www.pbs.org || to.pbs.org Visit FRONTLINE's website for an unprecedented collection of rare "artifacts" from the candidates' lives, as well as 25... 01:56:48
In 1982, the economy under the Reagan Administration looked bleak. 02:42