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A million species are under the threat of extinction, scientists say.Since the passage of the Endangered Species Act in 1973, 11 species on that list have been declared extinct in the United States. One tool being used to combat the extinction crisis is species reintroduction — the process of re-establishing a species population in an area they've been driven out of. Reintroduction has been successful in the U.S. before, with a variety of species, including black-footed ferrets, which were once among the rarest mammals in the world.We discuss how decisions over reintroductions are made and check in on the battle over a gray wolf release program in Colorado.This episode is part of our series, "SOS: Save Our Species," which takes a closer look at the Endangered Species Act and its impact 50 years later. Want to support 1A? Give to your local public radio station and subscribe to this podcast. Have questions? Find out how to connect with us by visiting our website.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

What do bison, beaver, wolves and sea otters all have in common?They're keystone species. That means they have an outsized impact on their ecosystem. It took humans driving some of these to near extinction to realize just how important they are.Now animals like the American Bison and North American Beaver are some of the Endangered Species Act's most notable success stories. As part of our series marking the 50th anniversary of the Endangered Species Act, we're taking a closer look at the efforts to save keystone species.Want to support 1A? Give to your local public radio station and subscribe to this podcast. Have questions? Find out how to connect with us by visiting our website.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

Scientists predict that more than 1 million species could go extinct in the coming decades. It's been 50 years since Congress passed the Endangered Species Act in 1973 to protect plants and animals in the U.S. from extinction. Over 99 percent of the more than 1,600 species listed as endangered or threatened have survived.But the work to protect our nation's biodiversity is far from over. Just last month, the U.S. Fish and Wildlife Service announced that it was delisting 21 species from the act due to extinction. It included one species of bat and 10 kinds of birds. We discuss what the Endangered Species Act has accomplished in 50 years and how we should think about the next 50 years of conservation.Want to support 1A? Give to your local public radio station and subscribe to this podcast. Have questions? Find out how to connect with us by visiting our website.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy