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Earth: The Biography - Atmosphere

Seizoen: 1 - Aflevering: 2 / 2 - Eerst uitgezonden: 27 november 2007 - Episode ID: 83476

The atmosphere is Earth's protective layer, cloaking us in a warm, oxygen-rich embrace and shielding us from the cold hostility of space. It acts as a natural greenhouse, keeping the Earth 51 degrees Fahrenheit warmer than it would otherwise be. Yet the atmosphere is also full of contradictions. It's immensely powerful but at the same time highly sensitive. It's destructive, yet it shelters us. It was created in part by the planet's first organisms, and it continues to be essential for life.