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

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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

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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

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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

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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

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These small, wild cats with famously grumpy expressions are uniquely adapted to their frigid high-altitude environtments. Learn more about them in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/mammals/pallas-cat.htm

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Popular culture throws around the terms 'sociopath' and 'psychopath' a lot, but neither is a real mental health diagnosis. Learn about the actual traits and conditions behind these terms in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/mental-health/mental-disorders/sociopath-vs-psychopath.htm

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The majority of humans become lactose intolerant as they grow up. Learn how ancient herders changed our digestive gene pool in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/wellness/food-nutrition/facts/humans-built-drink-milk-adults.htm

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https://auto.howstuffworks.com/car-driving-safety/auto-safety-testing/escape-sinking-car.htm; https://auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/auto-glass.htm

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Cherry blossom trees are so celebrated because their beautiful blooms are so short-lived. Learn about these trees (and how so many wound up in Washington, D.C.) in this episode of BrainStuff, based on this article: https://people.howstuffworks.com/culture-traditions/cultural-traditions/cherry-blossom.htm

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Starting in the 1930s, this adventurous Black woman toured the U.S., performed stunts, and served her country on motorcycles. Learn more in this episode of BrainStuff, based on this article: https://history.howstuffworks.com/historical-figures/bessie-stringfield.htm

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