Tens of thousands of animal species are facing extinction, mostly because of human activity. But thanks to conservationists, there are some animals that are making a comeback. This is part four of “The New Conservationists,” a four-part series about the evolving world of animal conservation. Listen to part one, part two and part three. Recommended reading: – The Panda Factories – Flying Conservationists Teach Endangered Birds to Migrate – The Last Wild Horses Are Finally Returning to Their Natural Habitat – Great Nicobar Island Is a Paradise in Danger E-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter. Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper, Madison Goldberg and Jeff DelViscio. This episode was hosted by Rachel Feltman with co-host Ashleigh Papp. Our show is edited by Madison Goldberg with fact-checking by Shayna Posses and Aaron Shattuck. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices