BrainStuff

New legislation in the United States allows farmers to grow hemp -- cannabis's non-psychoactive cousin. Learn why this could become big business in today's episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

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 episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Given the right depth, temperature, and access to volcanic gases, lakes can explode and kill thousands in the process. Learn how these limnic eruptions happen in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Scorpions light up a glowing green under ultraviolet light. Science isn't entirely sure how but has a few theories on why. (Y'know, aside from "Scorpions are metal.") Learn more about scorpions' fluorescence in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Some food safety charts claim that whole milk goes off more quickly than skim milk, but the scientific evidence is mixed. Learn more about milk science in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Some of you are giving this episode title serious side-eye, but believe us: some other folks think gasoline smells excellent. Delicious, even. Learn why in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Popular wisdom holds that eating before bed -- and especially eating spicy or 'strange' food, however you define strange -- will doom you to nightmares. But is there any science behind that? Learn more in this classic episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Our planet Earth produces a constant hum too quiet for our ears to detect, but researchers have finally captured a recording of it. Learn more about the sound, called permanent free oscillations, in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Reptiles and amphibians have all sorts of adaptations for surviving cold weather, even in places where temperatures dip below freezing. Learn how they manage the cold in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Receiving one or more Michelin stars is one of the highest honors in the restaurant industry. Learn how a tire company started this prestigious tradition in today's episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

If you take a pull of air from a helium balloon, you'll sound like a cartoon version of yourself for a few seconds. Learn why helium makes you so high pitched in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Humans have been making New Years' resolutions for millennia, but we're still bad at keeping them. Learn some science behind building better resolutions in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Lots of other mammals make great use of their tales, so why don't humans have them? Learn about the science of tails in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

You've probably experienced a noise loud enough that it hurt your ears, but could a noise be so loud that it could actually kill you? Spoiler alert: Yes. Learn more in today's episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Whale songs are eerie, beautiful, and -- as it turns out -- completely on-trend. Learn how humpback whales share tunes among herds in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Words like 'poop' and 'wiggle' are inherently humorous, and science may have figured out why. Learn what research has to say about why some words tickle us in this episode of BrainStuff.  Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Beer and soda both form sudsy bubbles when you pour them, so why does soda's foam dissipate while beer's forms a head? Learn about foam physics in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Frankincense and myrrh play a part not only in the story of Christmas, but in lots of other religious traditions as well -- and a few practical ones, too. Learn more about these aromatic substances in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Most of the trees decorated for Christmas don't naturally grow in a perfect cone shape -- so how do they get that way, and why did we decide on that shape in the first place? Learn about the history of Christmas trees in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Why exactly do folks deck the halls with boughs of holly during the Christmas season? Learn about the history and legends behind holly in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Everybody has an accent -- some are just considered neutral by native speakers. Learn how accents develop and how they influence us in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Elevators cables are inspected on the regular, but what happens when one breaks? Learn about the ingenious systems that keep elevators safe when even the worst happens in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

It's somewhere between tempting and inevitable to break into song in the shower. But why? Learn about the psychology and physiology of shower singing in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Palm oil is in lots of foods, cosmetics, and household products -- and that's a very serious thing. Learn the problems (and solutions) that palm oil presents in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

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 episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.