Today we’re sharing an episode from TED Radio Hour on NPR, which explores the biggest questions of our time with the help of the world's greatest thinkers. The host Manoush Zomorodi speaks with four ocean experts, including our former co-host Dr. Ayana Elizabeth Johnson, about how to grocery shop for seafood sustainably, how much the ocean has changed over the last century, and how beautiful whale ...

For decades, fossil fuel companies have fought action on climate change. They've done so directly – by challenging legislation that would help reign in emissions. But they've also done it indirectly, by funding organizations who lobby congress, launching fake grassroots campaigns, and perhaps most importantly, through advertising. These ads, according to Martin Watters at the nonprofit firm ClientE...

We asked for your weirdest alternative energy ideas, and you delivered. This week, Alex — plus climate journalists and experts Brian Kahn and Amelia Urry — vet some wacky new ways we could power our planet in the future. Join us as we assess the good, the bad, and the viable… in our very first HTSAP game show.