Brainstuff
BrainStuff
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How does a Fresnel lens work?
The thin piece of plastic called a Fresnel lens solves ...
The thin piece of plastic called a Fresnel lens solves some of the problems inherent in traditional magnifying lenses. Learn more about the benefits and weaknesses of Fresnel lenses in this podcast from HowStuffWorks.com.
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How do gasoline direct injection engines work?
The latest improvement on the internal combustion engine is called ...
The latest improvement on the internal combustion engine is called gasoline direct injection. In this episode, Marshall explains how gasoline direct injection technology works -- and how soon we'll see it in production vehicles.
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How Botulism Works
Botulism bacteria creates a type of poisoning and paralysis -- ...
Botulism bacteria creates a type of poisoning and paralysis -- but how does it actually work? Check out this HowStuffWorks podcast to learn more about the effects and spread of botulism.
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How do sodium acetate heat pads work?
Sodium acetate heat pads start out as a pouch of ...
Sodium acetate heat pads start out as a pouch of liquid and crystallize into a warm solid. Explore the fascinating chemistry that makes these heat pads work in this podcast from HowStuffWorks.com.
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What causes poison ivy blisters?
When people get a rash from poison ivy, their bodies ...
When people get a rash from poison ivy, their bodies are reacting to a chemical called urushiol. Check out this HowStuffWorks podcast to learn more about poison ivy rashes.
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What is an MRE?
An MRE -- or meal ready to eat -- contains ...
An MRE -- or meal ready to eat -- contains precooked, sterilized food originally made to nourish soldiers. Check out this HowStuffWorks podcast to learn more about the retort packaging that makes MREs possible.
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Where did the potato chip come from?
Potato chips were invented in 1853 by an American cook ...
Potato chips were invented in 1853 by an American cook named George Crum, and they've been a popular food item ever since. Learn more about George Crum and the evolution of the potato chip in this episode of BrainStuff.
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What makes your arms, legs and feet fall asleep?
When you put prolonged pressure on your feet, arms or ...
When you put prolonged pressure on your feet, arms or legs, you temporarily cut off or scramble communications between your brain and your body parts. Marshall explains exactly what happens when body parts "fall sleep" in this episode.
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How do airport scanners work?
The new full-body scanners used at airports in the United ...
The new full-body scanners used at airports in the United States have caused a huge controversy -- but how do they work? In this episode, Marshall breaks down the science behind full-body scanners, along with the uproar they've caused.
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Why is the Nissan Leaf such a big deal?
Nissan recently released the Leaf, a model which may be ...
Nissan recently released the Leaf, a model which may be the first viable electric car to come on the market. How does it work? Why do people have high hopes for it? Tune in to this podcast from HowStuffWorks.com to find out more about the Nissan Leaf.
