Rupert Sheldrake 01:23 Ralph Abraham: A short primer on chaos theory. . . . The emergence of form from a field of chaos. 08:57 Rupert Sheldrake: “The problem I have with chaos theory . . . ” The issue of indeterminacy […]

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 […]

Excerpt from the BBC science documentary on SETI — the earliest extant TV footage of Sagan, then a young astronomer at the Smithsonian Astrophysical Observatory and Harvard.

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

Excerpt from Sagan's CSICOP keynote 'Wonder and Skepticism', delivered at the 1994 'Psychology of Belief' conference and later published in Skeptical Inquirer.