Stop signs were always the red octagons we know today -- so how was the color chosen, and why has it stuck? Learn about the history and psychology of red traffic signals in this classic episode of BrainStuff. See omnystudio.com/listener for privacy information.

BrainStuff Classics: Why Are Stop Signs Red?

Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.

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It wasn't a total cultural collapse, but several Maya cities were abandonded all around the same time. Learn how natural and human-driven climate change may have been key in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/green-science/climate-change-end-mayan-civilization.htm/printable See omnystudio.com/listener for privacy information.

Did the Maya Civilization Fall Because of Climate Change?

The nail polishes popular today owe their existence to the automotive industry, but the history of nail colors and varnishes goes back millennia. Learn the history of nail polish in this classic episode of BrainStuff, based on this article: https://health.howstuffworks.com/skin-care/nail-care/tips/colorful-history-nail-polish.htm See omnystudio.com/listener for privacy information.

BrainStuff Classics: What's the History of Nail Polish?

The photos on social media are arguably the cutest, but how do dogs feel when we dress them up? Can dogs feel emarrassment? Learn what science has to say in this classic episode of BrainStuff, based on this article: https://animals.howstuffworks.com/pets/do-dogs-get-embarrassed.htm See omnystudio.com/listener for privacy information.

BrainStuff Classics: Do Dogs Get Embarrassed When We Put Them in Costumes?

If a traffic light seems stuck on red, you're not stuck too. Learn what's legal and what's safe to try in this episode of BrainStuff, based on this article: https://auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/if-light-is-stuck-on-red-are-stuck-too.htm See omnystudio.com/listener for privacy information.

If a Stop Light Is Stuck on Red, What Can You Do?

Benedict Arnold is the United States' most famous traitor. Learn about his journey from hero to villain of the Revolutionary War in this episode of BrainStuff, based on this article: https://history.howstuffworks.com/historical-figures/benedict-arnold.htm See omnystudio.com/listener for privacy information.

BrainStuff Classics: Why Are Stop Signs Red?

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