Brainstuff

We all get bags under our eyes that make us look tired. Here's how it inevitably happens and some remedies to look your best.​ Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Christian explains the science behind the healthy green glow. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Loud noises suck. But are they deadly?​ Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Christian explains the process and risks of LASIK surgery, from preoperative exams, to lasers in your eyes. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

At first, it sounds crazy -- wouldn't hot water take longer to freeze? Weirdly enough, the opposite is sometimes true. Join Christian to learn more about a mystery that's puzzled humanity for centuries in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

You probably remember your 18th birthday, but not your first – or your zeroth. Why is that? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

If money is only valuable when we believe in it, how much is a Bitcoin actually worth? Christian explains the virtual currency as well as how to mine it and the risks involved in investing. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Intrauterine devices (IUDs) are a popular and effective method of birth control. So why don't Americans ​use them? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

What is silica gel, and why do I find little packets of it in everything I buy? Christian explains it all in this episode. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Sure, rearview mirrors are cool -- but how do they actually work? How can the same piece of glass have two different amounts of reflection? Join Christian as he explains the science behind these handy devices. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Some figs need fig wasps to pollinate their fruit. But are we eating dead wasps every time we bite into a fig? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Have you ever wondered how accents work? Tune in to this episode of BrainStuff to find out about the ever-evolving accent. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

For some people, winter means a daily battle against cracking, scaling or peeling lips. But what actually causes chapped lips? How can you prevent it? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Cats purr for all kinds of reasons, including communication and healing themselves. Christian explains how purring works and which cats can't do it. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

They’re just horses with stripes, right? So why don’t we ride them around like Seabiscuit or Black Beauty? Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

The stomach is a hollow, many-layered organ that produces powerful acids to break down food -- and another substance to protect the stomach from being digested. Find out what this substance is, and learn more about the stomach, in this episode. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

Cars rely on batteries to keep their electrical parts running and alternators to keep their batteries alive. Battery lights come into play when there's a charging problem. Find out more about battery lights in this podcast from HowStuffWorks.com. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

When water comes in contact with the complex molecules that make up cotton and nylon, it causes a different action in each material -- but why? Listen in as Marshall Brain breaks down the science behind water absorption in this podcast. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

There are many kinds of motion sensors, from active to passive systems. Get the scoop on how myriad motion sensing systems work in this podcast from HowStuffWorks.com. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.

What makes a "smart" house so smart? These high-tech houses intelligently use resources and are responsive to the needs and habits of their occupants. Tune in to learn more. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.