Pri: Living On Earth

Electrifying a Nationwide Standard / Putting Air Pollution on the Front Burner / Science Note/Sticky Rice / The world's largest solar power plant / The Scoop on A Unique Dog Waste Digester / A Tornado of Birds / Listener Letters / Heinz Winner / Taming the Colorado River: Hoover Dam turns 75 Learn more about your ad choices. Visit megaphone.fm/adchoices