Levi Draheim, 10, is suing the US government over climate change with 20 other young people.

Also: fishermen in Greenland are doing better than ever, and that’s in part thanks to climate change; instead of fighting global competition, Alaska's wild salmon industry (reluctantly) embraces it; a researcher imagines what the US would look like if sea levels were to rise by two meters; solar power entrepreneurs come to Puerto Rico; plus what it’s like to fly in a plane when most of the passengers are pets.

(Image: Levi Draheim, 10, lives in Satellite Beach, Florida. Credit: PRI’s The World)