The Cold War (Overview, Building of the Berlin Wall, Cuban Missile Crisis)
Korean War
Chinese Famine - 1959
Vietnam War (Overview, Tet Offensive, My Lai Massacre, Kent State Massacre)
Energy Crisis - 1970s
Iranian Hostage Crisis - 1979
Mount St. Helens Eruption - 1980
Chernobyl Nuclear Disaster - 1986
Challenger Explosion - 1986