What do the symbols on the U.S. one-dollar bill...04/20/15
If you've ever looked carefully at a U.S. one-dollar bill, you've probably noticed some mysterious symbols and Latin phrases. What do these symbols stand for? Why are they on there? Marshall Brain breaks it down for you in this episode.
How many calories does a person need daily?
The amount of calories a person needs to consume on a daily basis varies by individual. Discover the three factors that can help you determine your daily caloric needs in this episode of BrainStuff.
How do self-setting clocks work?
Self-setting clocks and watches synchronize themselves with the atomic clock in Colorado with the help of a special radio station. Find out how -- and learn more about NIST's radio station -- in this episode.
How do they get the lead in a wooden pencil?
Today's pencils are manufactured very differently than the original versions; but they still use a material called graphite, which isn't lead at all. How does the graphite get in the pencil? Find out in this episode.
How can a valet rip you off?
Once relegated to high-end restaurants and clubs, valets are increasingly common across the United States. But how can you trust your valet -- and how will you know if the valet is scamming you? Tune in and find out.
How Proton Therapy Works
As a method of treating cancer, proton therapy has great potential. But how does it work, exactly, and what makes it superior to other forms of cancer treatment? Tune in and find out.
How do bake and broil settings differ?
Kitchen ovens typically have two settings: bake and broil. What's the difference between the two? Explore the science behind baking and broiling in this podcast from HowStuffWorks.com.
What is a lightyear?
A lightyear is a way of measuring distance -- specifically, the distance light can travel in one year. Just how far is that? Check out this podcast from HowStuffWorks to learn more about astronomy.
How much oxygen does a person consume in a day?
The average adult at rest inhales and exhales between 7 to 8 liters of air each minutes. Check out this HowStuffWorks podcast to learn how much oxygen a person uses during a day of inhalation and exhalation.
How Sea Monkeys Work
Sea Monkeys are a type of brine shrimp. These shrimp create remarkably resilient eggs called cysts. Check out this HowStuffWorks podcast and learn more about the secret behind Sea Monkeys.
How does chlorine bleach work?
When you buy a gallon of bleach at the grocery store, what are you actually purchasing? Check out this HowStuffWorks podcast to learn more about bleach, chlorine and the chemical reactions behind these products.
Why can't we breathe underwater?
Water is made up of hydrogen and oxygen, so why aren't we able to breathe underwater? Find out in this episode of BrainStuff.
What does it mean when a car has dual overhead cams?
A camshaft plays an integral role in the functioning of an engine. And dual overhead cams ramp up a machine's performance even more. Find out how dual overhead camshafts work in this episode.
Could anti-lock brakes detect a flat tire?
By using a computer to monitor the rotation of the car's wheels, an anti-lock braking system helps drivers avoid skids. Could this computer also monitor flat tires? Check out this HowStuffWorks podcast to learn more about brake systems.
Why are traffic lights being replaced with LEDs?
Across the country, incandescent traffic lights are being replaced with LED arrays. Check out this podcast from HowStuffWorks to learn more about the advantages of LED traffic lights.
Why is a circular saw louder than a table saw?
Circular saws are much noisier than table saws partly because of the type of motor they possess. Learn more about universal and induction motors in BrainStuff, a podcast from HowStuffWorks.com.
How does an airplane toilet work?
Airplane toilets serve the same function as regular ones, but because they exist in a moving environment, they rely on slightly different technology to get the job done. Find out how they work in this podcast from HowStuffWorks.com.
How do they make fortune cookies?
You've probably had countless fortune cookies after Chinese meals, but have you ever wondered how they're made? Discover the "food technology" behind those prescient little cookies in this episode of BrainStuff.
How do cats purr?
Cats tend to purr when they're happy, but pleasure isn't the only reason for this behavior. And they aren't the only animals who purr. Find out why and how cats and other animals purr in this episode of BrainStuff.
How Flatulence Works
Learn about the causes of gas -- and not the kind you put in your car -- in this podcast from Marshall Brain.
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