Is algae the secret to feeding our growing world? Plus, new evidence for a sixth mass extinction that occurred even earlier than the Big Five. And some prescient thoughts on democracy from fifty years ago, courtesy of the creator of Charlie Brown.Sponsors:I Am Bio, Subscribe at bio.org/podcastUncommon Goods, Get 15% off at uncommongoods.com/coolLinks:Is it time to start eating algae? (National Geographic)Scientists Uncover Evidence of What May Be Earth's First Mass Animal Extinction (ScienceAlert)Geobiologists shine new light on Earth's first known mass extinction event 550 million years ago (ScienceDaily)Charles Schulz shared thoughts on democracy with 10-year-old fan (Upworthy)Charles Schulz's Letter About Democracy, Discovered 50 Years Later (KQED)Jackson Bird on TwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.