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Secret War (2017x7)

Date de diffusion: Avr 17, 2017

The U.S. dropped more than 2 million tons of bombs on Laos from 1964 to 1973 during the Vietnam War. That's equal to a planeload every 8 minutes for 9 years. How does a country recover? New hope for Vietnam War survivors; Neil deGrasse Tyson and Ron Howard; high-tech self-improvement.