BrainStuff

Latest Episodes:

What is the Difference Between a Carat and a Karat? Jul 14, 2008

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Carats are used for diamonds, while karats are used for gold. Learn more about the difference between carats and karats in this HowStuffWorks podcast.

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How Perceiving Earth as a Sphere Works Jul 14, 2008

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Is there any way that people could know the world is sphere while standing on the earth? Learn more about perceiving earth as a sphere in this HowStuffWorks podcast.

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How Flatulance Works Jul 14, 2008

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Learn about the causes of gas (flatulence) in this podcast from Marshall Brain.

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How Leap Years Work Jul 14, 2008

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A normal calendar years is 365 days long, but the earth actually takes 365.2422 days to completely orbit the sun. Learn more about leap years in this HowStuffWorks podcast.

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How Red Eyes in Photographs Work Jul 14, 2008

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The flash of a camera is bright enough to cause a reflection off the human retina -- the red we see in these photos comes from the blood vessels in the eye. Learn more about red eyes and cameras in this HowStuffWorks podcast.

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What is the Fastest Computer in the World? Jul 14, 2008

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Although the speed of computers is growing exponentially, the human brain may handle roughly ten quadrillion instructions per second. Learn more about the world's fastest computer in this HowStuffWorks podcast.

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How Do Vitamins Work? Jul 14, 2008

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A vitamin is a small molecule the body needs but cannot manufacture on its own. Learn more about vitamins in this HowStuffWorks podcast.

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How Nanosolar Works Jul 14, 2008

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A company named Nanosolar is shaking up the alternative energy industry by offering solar technology at the lowest prices in history -- even cheaper than energy derived from coal. Learn more about Nanosolar in this HowStuffWorks podcast.

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How Ultra Hi-Def Works Jul 14, 2008

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A standard HD screen has roughly 2 million pixels per frame -- but an ultra HD has four times that resolution. Learn more about ultra hi-definition in this HowStuffWorks podcast.

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How Stealth Technology Work Jul 14, 2008

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Shaping an airplane a certain way -- or using materials that absorb radar waves -- causes a stealth aircraft to have the signature of a small bird, rather than an airplane.

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