Venus: Death of a Planet

Long ago, from the fires of our Sun's birth, twin planets emerged: Venus and Earth. Nature draped one world in the greens and blues of life, while enveloping the other in acid clouds, high heat, and volcanic flows. Why did Venus take such a disastrous turn and Earth developed a vibrant biosphere?

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S1 · E14

Cosmic Energy: Cold Sparks to Black Holes

Fri, Sep 10, 2010