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Science Quickly

World Wilderness Down 10 Percent in 20 Years

Science Quickly

Scientific American

Science

4.2639 Ratings

🗓️ 12 September 2016

⏱️ 3 minutes

🧾️ Download transcript

Summary

South America and central Africa lost the most wilderness in a decline since the 1990s that saw the planet's wild areas down by a tenth   Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

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0:05.8

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0:11.0

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0:19.6

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0:22.7

.jp.j. That's Y-A-K-U-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacult.

0:33.5

This is Scientific Americans' 60-second science. I'm Steve Merski. Got a minute?

0:39.8

Only about 23% of the world's land area is still what you'd call wilderness,

0:45.9

where indigenous people, wildlife, plants, and microbes get a chance to live with little or no disturbance from large human populations.

0:54.7

But even that current figure of 23% is down by a tenth in just the last couple of decades,

1:00.9

which translates into an area the size of Alaska being converted away from wilderness

1:05.8

since the 1990s.

1:07.6

That's according to a study in the journal Current Biology that was also announced at the just-completed Honolulu meeting of the International Union for Conservation of Nature.

1:16.9

The research found that the regions that suffered the biggest wilderness losses were South America and Central Africa.

1:23.5

South America lost almost a third of its wilderness, while Africa's is down about 14%.

1:29.0

James Watson is the lead author of the study. He's with the Wildlife Conservation Society

1:33.7

and the University of Queensland. He's no relation to the more famous DNA double helix, James

1:38.9

Watson. In the journal article, he and his colleagues write, quote, The continued loss of wilderness areas is a globally significant problem with largely

1:48.4

irreversible outcomes for both humans and nature.

1:52.0

If these trends continue, there could be no globally significant wilderness areas left in

1:56.6

less than a century.

1:59.0

Proactively protecting the world's last wilderness areas is a cost-effective

2:02.9

conservation investment and our best prospect for ensuring that intact ecosystems and large-scale

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