BrainStuff

Latest Episodes:

Why is a circular saw louder than a table saw? Mar 16, 2015

Show notes

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.

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How does an airplane toilet work? Mar 13, 2015

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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.

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How do cats purr? Mar 09, 2015

Show notes

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.

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How Flatulence Works Mar 06, 2015

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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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What's the deal with milk? Mar 04, 2015

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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.

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How much does planet Earth weigh? Mar 02, 2015

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As far as weight goes, Earth is a pretty hefty celestial body. But exactly how heavy? And how does one measure something so massive? Find out in this podcast from HowStuffWorks.com.

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What are other ways to store energy besides batteries? Feb 27, 2015

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Batteries are a common way to store energy, but there are many others. Discover more energy storage techniques, from falling weights to fuel cells, in this podcast from HowStuffWorks.com.

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How does the common cold work? Feb 25, 2015

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We've all had a cold at one point or another; it entails an uncomfortable cocktail of symptoms like sneezing, coughing and a runny nose. But why do we get colds? How do they work? Find out in this podcast from HowStuffWorks.com.

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How do dry chemical fire extinguishers work? Feb 23, 2015

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Three elements create a fire. Discover what they are and how dry chemical fire extinguishers combat them in this podcast from HowStuffWorks.com.

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Where does aluminum come from? Feb 20, 2015

Show notes

Aluminum is both lightweight and strong, so it's no wonder that space stations, airplanes and thousands of other products use this metal. But where does it come from, and what makes it so special? Tune in to learn more.

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