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Humans have already wiped out hundreds of species and pushed many more to the brink of extinction through wildlife trade, pollution, habitat loss and the use of toxic substances. But the findings published in the scientific journal Proceedings of the National Academy of Sciences (PNAS) show that the rate at which species are dying out has accelerated in recent decades.
Gerardo Ceballos González, a professor of ecology at the National Autonomous University of Mexico and one of the authors of the study, said approximately 173 species went extinct between 2001 and 2014.
"173 species is 25 times more extinct species than you would expect under the normal, background, extinction rate," he told CNN in an email. He and his team found that in the past 100 years, more than 400 vertebrate species went extinct. In the normal course of evolution, such extinctions would have taken up to 10,000 years, they said.
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Humans have already wiped out hundreds of species and pushed many more to the brink of extinction through wildlife trade, pollution, habitat loss and the use of toxic substances. But the findings published in the scientific journal Proceedings of the National Academy of Sciences (PNAS) show that the rate at which species are dying out has accelerated in recent decades.
Gerardo Ceballos González, a professor of ecology at the National Autonomous University of Mexico and one of the authors of the study, said approximately 173 species went extinct between 2001 and 2014.
"173 species is 25 times more extinct species than you would expect under the normal, background, extinction rate," he told CNN in an email. He and his team found that in the past 100 years, more than 400 vertebrate species went extinct. In the normal course of evolution, such extinctions would have taken up to 10,000 years, they said.
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