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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
Dinosaur Planet
Dinosaur Planet

   2003    Science
Becoming Human
Becoming Human

   2010    History
Secrets of the Dead
Secrets of the Dead

   2017    History
Catalyst
Catalyst

   2017    Science
Queen Live at Wembley Stadium
Queen Live at Wembley Stadium

   1986    Art
The Universe
The Universe

   2010    Science
The Wehrmacht
The Wehrmacht

   2007    History
Generation Iron
Generation Iron

   2017    Culture