Brainstuff
BrainStuff
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Why doesn't paper money disintegrate in the washing machine?
Normal paper is made of cellulose from trees, but paper ...
Normal paper is made of cellulose from trees, but paper money is made from cotton and linen fibers. Learn how this makes paper money more water-resistant in this podcast from HowStuffWorks.
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How are old black and white movies colorized?
Adding color to black and white movies is incredibly tedious. ...
Adding color to black and white movies is incredibly tedious. To speed up the process, the coloring is done on a computer, using a digital version of the film. Learn more about colorization in this HowStuffWorks podcast.
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How hair length works
As hair cells form in follicles, they push other cells ...
As hair cells form in follicles, they push other cells out of the follicle. Check out this HowStuffWorks podcast to learn more about your hair's growth and rest phases.
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Why does hydrogen peroxide foam when you put it on a cut?
Hydrogen peroxide's foaming action is due to the catalase in ...
Hydrogen peroxide's foaming action is due to the catalase in blood and cells. Check out this HowStuffWorks podcast to learn how hydrogen peroxide interacts with catalase.
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What is fertilizer, and why do plants need it?
In order for a plant to grow and thrive, it ...
In order for a plant to grow and thrive, it needs a number of different chemical elements. Check out this podcast from HowStuffWorks to learn more about fertilizer.
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Why do apples and potatoes turn brown when you slice them?
All cells contains thousands of enzymes, and each of these ...
All cells contains thousands of enzymes, and each of these enzymes is necessary for the cell. Check out this HowStuffWorks podcast to learn which enzymes cause apples and potatoes to turn brown upon exposure to oxygen.
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What is an anti-siphon valve?
In houses with a built-in sprinkler system, anti-siphon valves prevent ...
In houses with a built-in sprinkler system, anti-siphon valves prevent pesticides, pet waste, and other contaminants from polluting the home's water source. Check out this HowStuffWorks podcast to learn more about anti-siphon valves.
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How do exhaust headers work to improve an engine's performance?
The goal of headers is to make it easier for ...
The goal of headers is to make it easier for an engine to push out exhaust gasses. Check out this HowStuffWorks podcast to learn how exhaust headers channel exhaust gasses and improve engine efficiency.
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How a GFCI outlet works
A normal 120 volt outlet in the US has two ...
A normal 120 volt outlet in the US has two vertical slots and a role hole centered below the slots -- the outlets with a pair of red and black 'test' and 'reset' buttons are known as GCFI outlets. Check out this HowStuffWorks podcast to learn more.
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What is chewing gum made of?
Up until World War II, chewing gum was made of ...
Up until World War II, chewing gum was made of a substance called chicle. Check out this HowStuffWorks podcast to learn more about the ingredients of modern chewing gum.
