The Extinction Crisis Is Accelerating, New Study Finds

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The sixth mass extinction in Earth’s history is accelerating as humans rapidly and relentlessly destroy the natural world, according to a new study looking at the loss of terrestrial vertebrate species. And the crisis poses an existential threat not only to thousands of animal and plant species, but to human civilization as a whole.

The analysis, published Monday in the Proceedings of the National Academy of Sciences, comes as nations around the globe reel from the coronavirus pandemic — rooted in environmental destruction and the latest novel infectious disease to leap from animals to humans, with devastating consequences.

Researchers examined data on more than 29,000 species of amphibians, birds, mammals and reptiles and found that more than 500 of them ― 1.7% ― are “on the brink of extinction,” with populations of fewer than 1,000 individuals. More than half of those species have populations below 250, they found.

“The ongoing sixth mass extinction may be the most serious environmental threat to the persistence of civilization, because it is irreversible,” the authors write in the report. “Thousands of populations of critically endangered vertebrate animal species have been lost in a century, indicating that the sixth mass extinction is human caused and accelerating.”

A poisonous harlequin dart frog on a tree trunk in the jungle on Oct. 4, 2012, in Utria National Park, Colombia.
A poisonous harlequin dart frog on a tree trunk in the jungle on Oct. 4, 2012, in Utria National Park, Colombia.

One reason for this alarming trend is that human pressure on natural ecosystems continues to mount. The authors point to COVID-19 as the most recent example and stress that their results “reemphasize the extreme urgency of taking much-expanded worldwide actions to save wild species and humanity’s crucial life-support systems from this existential threat.”

“The vaccine for Covid-19 was natural habitat,” Gerardo Ceballos, an ecologist at the National Autonomous University of Mexico and lead author of the study, told The New York Times. “The pandemic is a great example of how badly we’ve treated nature.”

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