Peter Ward Peter Ward

Paleontologist Peter Ward speaking on the TED stage. Andrew Heavens/TED hide caption

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Andrew Heavens/TED

Are We Headed Into Another Mass Extinction?

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If you know the signs to look for, it becomes clear that the Earth itself is breathing. Reto Stockli/Alan Nelson/Fritz Hasler/NASA hide caption

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Reto Stockli/Alan Nelson/Fritz Hasler/NASA