Living on Earth: May 1, 2015

Siberia's Mysterious Craters / Leading at the Top of the World / Illuminated Fishing Nets Prevent Bycatch / Calling Over Boat Noise Is Making Orcas Hungry / Protecting Blue Whales and Blue Skies / Beyond the Headlines / The GOP's Lonely Climate Warrior / BirdNote: Vocabularies of Birdsong Learn more about your ad choices. Visit megaphone.fm/adchoices