The Disturbing Signs Earth Is Already Amid a Mass Extinction Event (Video)

Slate in motion.
July 31 2014 12:37 PM

Are We Already in a Mass Extinction Event?  

A biologist traced the evidence and came to a sobering conclusion.

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ISHANGO, LAKE EDWARD, DEMOCRATIC REPUBLIC OF CONGO - AUGUST 9: A bull elephant bathes and drinks water on the Northern shores of Lake Edward inside Virunga National Park, on August, 9 2013 in Ishango, DR Congo. This place is close to Kavanyongi, the biggest village on the lake shores on the Congolese side, with a population of 30 000. Ishango in the 'Block V' area of Virunga National Park. UK company Soco International PLC is planning to explore for oil in DRC's Virunga National Park, a protected World Heritage Site and most biodiverse park in Africa. (Photo by Brent Stirton/Getty Images for WWF-Canon)

Brent Stirton

A new analysis published in Science traces how “defaunation”—the decline of species like elephants and polar bears—is consistent with mass extinction events in the past.

Dallas Jensen is a regular video contributor to Slate.

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