GOING EXCTINCT
HUMANITY MIGHT “ALREADY BE A DEAD SPECIES WALKING.”
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Apocalypse When
Our days on Earth may be numbered.
In fact, by the end of this century, the global population could start its inevitable decline, paleontologist andNatureeditor Henry Gee argued in anewopinion piece forScientific American— and he’s not shy about using the word “extinction.”
“I suspect that the human population is set not just for shrinkage but collapse — and soon,” he wrote.
Extinction Debt
Gee points to lack of genetic variation, falling birth rates, pollution, and stress caused by living in overcrowded cities as a recipe for disaster.
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“The most insidious threat to humankind is something called ‘extinction debt,’” Gee explained. “There comes a time in the progress of any species, even ones that seem to be thriving, when extinction will be…
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