"Why is Venus scorching hot? It's because…the flow of energy..." — Ann Druyan

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Why is Venus scorching hot? It's because…the flow of energy is blocked by a dense atmosphere of carbon dioxide….Venus is in the grip of a runaway greenhouse effect.

— Ann Druyan, Steven Soter, Himself - Host, and Neil deGrasse Tyson

The World Set Free

Venus carbon dioxide Greenhouse Effect

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By burning coal, oil and gas, our civilization is exhaling carbon dioxide much faster than…

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The essential message of life has been copied and recopied for more than 3 billion years.…

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I could be thousands of miles away, and yet, when you turn on whatever device is bringing…

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