Guest speakers: Terence McKenna, Ralph Abraham, Rupert Sheldrake 02:31 Terence McKenna: “[The apocalypse] seems to be the unique, unifying thread throughout the Western religions Most insistently of all religious systems on Earth, it is the Western systems that have insisted on appointing an end to their world.” 05:07 […]

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.

Sagan's hour-long keynote tribute lecture at the Worlds of Philip Morrison Symposium (Day 2), surveying the Copernican perspective and Morrison's contributions to physics and SETI.

Sagan's lecture at the American Astronomical Society Austin meeting, arguing a joint US-Soviet Mars mission could help avert global conflict; touches on H.G. Wells, Percival Lowell, and science fiction's framing of Mars.

Sagan's commencement speech at the University of Illinois at Urbana-Champaign on planetary science, scientific literacy, ozone depletion, and nuclear proliferation.