Investigative journalist Seymour Hersh made his name when he broke the story of the My Lai Massacre. Looking back you have to wonder: why did Lt. William Calley tell Hersh he’d killed hundreds of Vietnamese civilians? On this hour of To the Best of Our Knowledge Hersh says “because I asked him...Read more






Scientists are launching one of the most audacious projects ever conceived: a detailed map of the human brain, neuron by neron, synapse by synapse. For some scientists...