NPR's Ari Shapiro talks with scientist Alejandra Ramos, who just led a study about axolotls born in captivity who were released into the wild and survived. We've got some good news for axolotls. Those ...

With their goofy grins and feathery gills, axolotls have become stars of the pet world and video games like Minecraft. But these small, smiling salamanders are also helping scientists explore a ...