Books | Environment | Science

The Earth's 'Sixth Extinction' May Be One Of Our Own Making

NPR | Feb. 12, 2014 7:15 a.m. | Updated: Feb. 12, 2014 2:19 p.m.

Over the last half a billion years, there have been five major mass extinctions, when the diversity of life on Earth suddenly and dramatically contracted. Scientists are currently monitoring the sixth extinction, predicted to be the most devastating since the asteroid impact that wiped out the dinosaurs. But this time around, writer Elizabeth Kolbert says, humans are causing the extinction.

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