Bunyan Lecture 1993 - Carl Sagan
Complete Carl Sagan Bunyan lecture “Is There Intelligent Life on Earth?” 1993 - On Sagsutr
Bunyan Lecture 1991
Carl Sagan - Bunyan Lecture
Bunyan Lecture 2017 - Rainer Weiss
Bunyan Lecture 2011 Part 1
Bunyan Lecture 2016
Who Created God: Carl Sagan vs Theologians on Religion
Carl Sagan's 1994 "Lost" Lecture: The Age of Exploration
Bunyan Lecture 2011 Part 7
Carl Sagan: The Challenging Solar System. The Royal Institution, 1994
Carl_Sagan_on_the_cosmic_Rosetta_Stone lecture.flv
Carl Sagan testifying before Congress in 1985 on climate change
On the 8th Day
Carl Sagan - Occam's Broom
Carl Sagan's 1994 Lost Lecture The Age of Exploration (Cleaned Up Audio)
Carl Sagan at MIT - Management in the Year 2000: Sloan School Symposium 1987
Carl Sagan on Man made Climate Change - 1990
Carl Sagan on Space Implications for Science and the Environment 1993)
A Universe Not Made For Us (Carl Sagan on religion)