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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
The Human Body
The Human Body

   1998    Medicine
The Story of India
The Story of India

   2007    History
The Truth About
The Truth About

   2018    Medicine
The Normans
The Normans

   2010    History
Rome Second Season
Rome Second Season

      History
Earth, the Power of the Planet
Earth, the Power of the Planet

   2007    Nature
The Last Dance
The Last Dance

   2020    Culture