Brainstuff
BrainStuff
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What do the ul marks on so many products mean?
UL stands for 'underwriters laboratories,' a safety testing organization -- ...
UL stands for 'underwriters laboratories,' a safety testing organization -- but what exactly does this group do, and why do they do it? Tune in and learn more about the UL mark in this podcast from HowStuffWorks.
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What's the total amount of gold in the world?
Have you ever wondered how much gold the world has ...
Have you ever wondered how much gold the world has produced over time? How about platinum? Get the grand totals in this HowStuffWorks podcast.
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How do candles work?
Before there were light bulbs, candles made the world a ...
Before there were light bulbs, candles made the world a brighter place. Discover the ingenious technology behind candles in this podcast from HowStuffWorks.com.
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What are frankincense and myrrh?
You might recognize frankincense and myrrh from the Biblical story ...
You might recognize frankincense and myrrh from the Biblical story of Jesus, but have you ever wondered exactly what they are? Tune in to get the skinny on frankincense and myrrh in this podcast from HowStuffWorks.com.
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How can an electric toothbrush recharge its batteries?
An electric toothbrush gets power from its base without the ...
An electric toothbrush gets power from its base without the help of metal contacts. Find out how this sealed system works in the following podcast from HowStuffWorks.com.
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How Smoke Works
When you put a fresh piece of wood on a ...
When you put a fresh piece of wood on a hot fire, volatile organic carbons in the wood evaporate, creating smoke. Learn more about smoke in this Brainstuff podcast.
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How X-Ray Machines Work
An X-ray machine is essentially a camera that uses x-rays ...
An X-ray machine is essentially a camera that uses x-rays to expose the film, instead of visible light. Learn more about x-ray machines in this HowStuffWorks podcast.
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How Boogers and Mucuous Membranes Work
Mucous contains mostly water and mucin -- a branched polysaccharide. ...
Mucous contains mostly water and mucin -- a branched polysaccharide. When polysaccharides such as mucin or cornstarch are mixed with water, the result is a sticky substance.
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Can we make gasoline from bacteria?
A new company is claiming that, next year, the problems ...
A new company is claiming that, next year, the problems of carbon emissions, foreign oil dependence, oil spills, fuel shortages, etc. will all end due to a breakthrough in biotechnology. Is it true?
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What is a restraining order, and how do you get one?
Restraining orders are cropping up in the news more and ...
Restraining orders are cropping up in the news more and more frequently, but how do they work? Join Marshall Brain as he breaks down the legality of restraining orders -- and how to get one.
