New study says Earth could face mass extinction in next 200 year - Spokane, North Idaho News & Weather KHQ.com

New study says Earth could face mass extinction in next 200 years

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The recent study suggests that amphibians are most at risk with 41% of species threatened with extinction. The recent study suggests that amphibians are most at risk with 41% of species threatened with extinction.
KHQ.com - A recent study released in the scientific journal Nature says Earth could face a mass extinction on par with the one that killed off the dinosaurs 65 million years ago, and it could happen in the next 200 years or so. 

A mass extinction is when 75% or more of the planet's species die out, an event that has happened five times in Earth's history according to Nature. The study says most at risk are amphibians, with 41% of species threatened with extinction. For mammals, that number is 26%, while 13% of bird species are in danger. The study said only about 0.5% of 1 million known species have been evaluated and there might be more than 5 million species living on Earth. 

Why is this happening? According to the study, the most dire threat comes from "exploitation" (read: hunting, fishing, etc.) while habitat degradation comes in a close second. The study said the big unknown is climate change. If it isn't a huge factor, the sixth extinction could take thousands of years, but if climate change makes things worse, the study says that Earth could lose 75% of its species by 2200. 
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