A lecture in Boulder, Colorado in 1983 with a small group of people with Q & A. Topics range from consciousness to emerging technologies (part 2).

Ted Koppel hosts an 80-minute panel discussion airing immediately after the ABC TV-movie The Day After — Sagan's first major TV deployment of the 'nuclear winter' framing, alongside Kissinger, McNamara, Buckley, Wiesel, and Scowcroft.