BrainStuff

Science isn't entirely sure why humans and other animals yawn, let alone why yawning can be contagious -- but we've got some good hypotheses. Learn about them, from cooling the brain to spreading alertness, in today's episode of BrainStuff, based on these articles: https://science.howstuffworks.com/life/inside-the-mind/human-brain/question572.htm; https://science.howstuffworks.com/life/inside-the-mind/human-brain/contagious-yawn.htm
See omnystudio.com/listener for privacy information.

Rip currents are dangerous flows of water that can drag you away from the shore and out into the deep. Learn how they form, what to watch for, and how to escape one by swimming sideways or riding it out in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/earth/oceanography/rip-current.htm
See omnystudio.com/listener for privacy information.

Remote islands are excellent laboratories for observing evolution at work -- and in the case of a flightless bird called the Aldabra rail, we can observe how its evolution happened twice. Learn about iterative evolution in today's classic episode of BrainStuff, based on this article: https://science.howstuffworks.com/life/evolution/iterative-evolution.htm
See omnystudio.com/listener for privacy information.

The tomato originated in the Americas and spread during European colonization. But was it really thought to be poisonous (or cause lycanthropy) when it first came to Europe? Learn about the legends behind tomatoes -- and how we got the sturdy ones sold in stores -- in today's episode of BrainStuff, based on this article: https://recipes.howstuffworks.com/where-did-the-tomato-come-from.htm
See omnystudio.com/listener for privacy information.

OK, that's a trick question. Aspirin goes everywhere in your body -- and wherever it goes, it works by preventing processes that amp up pain signals, encourage inflammation, cause fever, and more. Learn about the history and workings of aspirin (aka acetylsalicylic acid) in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/medicine/medication/aspirin.htm
See omnystudio.com/listener for privacy information.