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Who Speaks for Earth

   1980    Culture
Sagan reflects on the future of humanity and the question of 'who speaks for Earth?' when meeting extraterrestrials. He discusses the very different meetings of the Tlingit people and explorer Jean-Fran├žois de La Perouse with the destruction of the Aztecs by Spanish conquistadors, the looming threat of nuclear warfare, and the threats shown by destruction of the Library of Alexandria and the murder of Hypatia. The episode ends with an overview of the beginning of the universe, the evolution of life, and the accomplishments of humanity and makes a plea to mankind to cherish life and continue its journey in the cosmos. The Cosmos Update notes the preliminary reconnaissance of planets with spacecraft, the fall of the Berlin Wall and the end of apartheid in South Africa, and measures towards the reduction of nuclear weapons.
Series: Cosmos
Earthflight
Earthflight

   2012    Nature
How Art Made the World
How Art Made the World

   2006    Art
Enemies of Reason
Enemies of Reason

      Medicine
Natural World
Natural World

   2009    Nature
Dangerous knowledge
Dangerous knowledge

   2007    Science
Hiroshima
Hiroshima

   2005    History
Bronze Age
Bronze Age

   2016    History
Wings
Wings

      Nature