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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
Shine a Light
Shine a Light

   2008    Art
The Secrets of Quantum Physics
The Secrets of Quantum Physics

   2014    Science
Becoming Human
Becoming Human

   2010    History
How to Grow a Planet
How to Grow a Planet

   2012    Science
Clash of the Gods
Clash of the Gods

   2009    History
Senna
Senna

   2010    Culture