BrainStuff

Dogs communicate by yawning, and it's complex to figure out what they might mean. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

You've probably heard that wireless internet (WiFi) is dangerous. But is it true? Christian breaks it down. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

In this episode, Christian explains how bacteria spoils food and what temperature your refrigerator should be to slow their progress. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Do you want to strangle people for chewing gum? Does the crinkle of plastic fill you with inarticulate, homicidal fury? If so, you may suffer from the little-understood condition called 'misophonia'. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

How can a single piece of glass look like a mirror from one side but a window from the other? It's not magic, it's materials technology. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

If your teeth are one of the hardest parts of your body, then how could soda damage them? Tune in to learn more. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

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

We've all heard about the supposed relationship between confidence and knowledge - but is it true? Two researchers think they've found the answer. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Your saliva makes things taste great while killing bacteria and helping digestion. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

How can a camera's flash make your eyes glow red? Tune in to learn how it works -- and how to prevent it. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Christian explains why male humans' voices generally get lower than female humans' during puberty. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Honey bees are vanishing? But why? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

The future of your favorite TV shows hinges on their ratings – but what is a rating, and where does it come from? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

The next time you honk your car horn at that jerk who cut you off, you’ll understand how it uses physics to get the job done. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

We’ve all seen movies with supervillains building catastrophic Doomsday devices – but has anyone ever built a real one? Join Christian to learn how the Cold War led to the most dangerous nuclear system in history: Russia’s legendary – and terrifying – Dead Hand. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

There are many misconceptions about what causes the Aurora Borealis when it really requires solar winds, magnetic fields and excited atmospheric gases. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Christian defines what white noise actually is and how it's used to mask other annoying sounds. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

A vitamin a day keeps you healthy to play. Or does it? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

For the vast majority of international travelers, a passport is a necessity. But why? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

For the vast majority of international travelers, a passport is a necessity. But why? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

These insects live in your bedroom, drink your blood and stain your sheets. How do you get rid of them? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Without the moon, how would Earth's environment be affected? Would we survive? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

A plumber in Alaska invented a bizarre condiment that launched a multimillion dollar industry, and today ranch is the most popular salad dressing in the US. But what exactly is this stuff? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

You’ve heard of fracking, and you’re pretty sure lots of people don’t like it, but do you know how it actually works? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

What do fireflies, TVs, neon signs, and glowsticks have in common? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.