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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
Leaving Neverland
Leaving Neverland

   2019    Culture
Fierce Queens
Fierce Queens

   2020    Nature
Blue Planet II
Blue Planet II

   2017    Nature
Eden: Untamed Planet
Eden: Untamed Planet

   2021    Nature
High Score
High Score

   2020    Technology
Top Gear
Top Gear

   2012    Technology
Space Deepest Secrets
Space Deepest Secrets

   2020    Science
Building Giants
Building Giants

   2019    Technology