Saltwater Beavers Bring Life Back to Estuaries / Everglades National Park, a "River of Grass" / Drilling in the Everglades / Fly-fishing Saved From Pollution / Gaza Water Crisis In the Gaza Strip, where every three out of four people are refugees, clean water is scarce and there's a worsening health crisis for Gaza's children. Also, it turns out that beavers, a keystone species in some freshwater ecosystems, could hold the key to help restore degraded coastal habitats, too. And Everglades National Park provides a place of sanctuary in nature for those looking for peace and quiet, as well as a front-row-seat view of wildlife like alligators. The "River of Grass" and more, this week on Living on Earth from PRI. Learn more about your ad choices. Visit megaphone.fm/adchoices