How do calorie meters work?08/22/14
It's easy to jump on an exercise machine and watch the calorie meter -- but how accurate are these meters? Learn more about calorie meters in this HowStuffWorks podcast
How does popcorn work?
Popcorn is a ubiquitous snack, but there's nothing commonplace about its creation. How does a kernel of corn become a puffed white treat? Find out in this podcast from HowStuffWorks.com.
How Cooking at High Altitudes Works
The boiling point of water decreases as altitude increases -- generally, this temperature decreases by one degree for every 540 feet of altitude. Learn more about cooking at high altitudes in this podcast from HowStuffWorks.
Why do cats have whiskers?
Cat whiskers, also known as "tactile hairs," are very different from a cat's regular body hair. In this episode, Marshall explains how these hairs are unique and what cats use them for.
How Color Blindness Works
Color blind individuals can suffer from an inability to differentiate between hues, and occasionally may not be able to see any colors at all. Learn more about color blindness in this HowStuffWorks podcast.
Why do limbs fall asleep?
Pressure on nerves can cause the nerves to stop sending impulses to the brain, causing limbs to fall asleep. Learn more about limbs falling asleep in this HowStuffWorks podcast.
Why do electric plugs have holes?
You might have noticed that plugs for electric appliances have two holes. There are three reasons for these apertures -- find out what they are in this podcast from HowStuffWorks.com.
What is the right way to remove a leech?
People have cooked up all sorts of ways to remove leeches over the years, but the simplest is still the most effective. Discover how to safely detach a leech using your hands in this podcast from HowStuffWorks.com.
What's the deal with milk?
Milk is often touted as a "miracle drink," full of restorative, nutritional properties. And there's some truth to this claim. Find out why mammal milk is called "the perfect food" in this podcast from HowStuffWorks.com.
How do one-way mirrors work?
One-way mirrors are ubiquitous in crime dramas, but how do they work? Discover the secret behind one-way mirrors in this episode of BrainStuff.
Why does lettuce stored in a bag stay fresh longer?
Many foods you'll find at the grocery store -- like lettuce, for example -- are stored in special plastic packaging called MAP that helps them stay fresh longer. Find out what MAP is, and how it keeps food fresh longer, in this episode of BrainStuff.
How much sugar do they really put in soda?
Sodas and soft drinks contain a surprising amount of sugar -- more than you might expect. Tune in as Marshall Brain reveals how much sugar is in soda in this episode of BrainStuff.
What is market capitalization?
If all the money in the US only totals 8 trillion dollars, how can the New York Stock Exchange have stocks valued at 26 trillion dollars? Tune in as Marshall Brain breaks down the practice of stock capitalization in this podcast from HowStuffWorks.com.
What causes that howling sound in PA systems?
A public address system's speakers emit strange noises, or feedback, when sound gets re-amplified. Get a detailed explanation of how feedback occurs in this podcast from HowStuffWorks.com.A public address system's speakers emit strange noises, or...
How does safety glass work?
Laminated safety glass has been around since the 1920s. Find out how safety glass is made, how it works and what it's used for in this episode of BrainStuff.
Why shouldn't you go swimming right after a meal?
As children, many of us have been admonished not to go swimming for at least an hour after eating. But, as it turns out, there's biology behind this commonplace advice. Tune in to this episode to find out why you shouldn't swim right after you eat.
Why can you hear the ocean in a seashell?
There are various theories about why you can hear ocean-like sounds when you hold a seashell up to your ear. Marshall Brain explains what you're probably hearing in that seashell -- and why you don't need a shell to hear it -- in this episode.
What is an Omega-3 fatty acid?
Omega-3 fatty acids are essential to the human body. Tune in to hear Marshall Brain explain the chemistry of fat molecules and fatty acids, Omega-3s in particular, in this podcast from HowStuffWorks.com.
What do those diamond-shaped signs on buildings mean?
The National Fire Protection Agency, or NFPA, uses these signs to indicate hazardous materials stored in an unknown building. Listen in to learn how the signs work -- and how they help firefighters -- in this podcast from HowStuffWorks.com.
Should you turn your computer off when it's not in use?
When it comes to the question of whether or not you should turn off your computer when you're not using it, there's no simple answer. Tune in to get Marshall's thorough take on the topic in this podcast from HowStuffWorks.com.
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