Illustration from a 1985 report by Lawrence Livermore National Laboratory scientist Michael MacCracken, showing smoke and soot lofted from nuclear detonations on day 1 and the passage of the smoke 5, 10, and 20 days later (See Document 13, “Global Atmospheric Effects of Nuclear War”)
1983 Lawrence Livermore Study Said Nuclear Exchange Could “Dramatically Affect the Atmosphere’s Temperature”
Defense Nuclear Agency Saw Nuclear War Producing “Atmospheric Trauma”
1988 Interagency Study Projected “Severe Disruption of [Food] Production, Processing, and Distribution”
President Reagan Stated That Nuclear Winter Was “Theoretically Possible”