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Heaven and Hell

   1980    Science
Sagan discusses comets and asteroids as planetary impactors, giving recent examples of the Tunguska event and a lunar impact described by Canterbury monks in 1178. It moves to a description of the environment of Venus, from the previous fantastic theories of people such as Immanuel Velikovsky to the information gained by the Venera landers and its implications for Earth's greenhouse effect. The Cosmos Update highlights the connection to global warming.
Series: Cosmos
The Art of Germany
The Art of Germany

   2010    Art
Bronze Age
Bronze Age

   2016    History
Conquest of the Skies
Conquest of the Skies

   2015    Nature
D-Day
D-Day

   2013    History
Secrets of the Dead
Secrets of the Dead

   2017    History
Life In Cold Blood
Life In Cold Blood

   2008    Nature
The Human Body
The Human Body

   1998    Medicine
The Story of India
The Story of India

   2007    History