BrainStuff

Water is a very heavy substance -- just one gallon weighs 8 pounds. Check out this HowStuffWorks podcast to learn more about how the passage of water affects your weight.

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The electric company bills its customer by the kilowatt-hour. The number of watts a device uses times the number of hours you leave it on tells you number of watt-hours it consumes, and divided by 1,000 will convert the measurement to kilowatt-hours. Listen to find out more in this podcast from HowStuffWorks.com.

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Hurricanes are enormously destructive, and sometimes seem to have a mind of their own. Tune in to this HowStuffWorks podcast to learn more about hurricanes.

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Since the heart is a muscle, it relies on the oxygen and nutrients contained in blood. This blood is supplied by arteries on the exterior of the heart -- when these arteries are blocked, a heart attack results. Listen to find out in this podcast from HowStuffWorks.com.

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Inkjet printers shoot extremely small droplets of ink -- thirty dots per millimeter or more -- onto paper to produce a picture. Check out this HowStuffWorks podcast to learn more about inkjet printers.

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Every gasoline engine has valves that work with the camshaft to let air into and out of the engine. Learn how VTEC -- Variable Valve Timing and Lift Electronic Control -- allows engines to adapt their camshafts in this HowStuffWorks podcast.

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On average, human hair grows a small amount each day. Listen in as Marshall Brain explains hair growth in this podcast from HowStuffWorks.com.

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The sound of gunfire is incredibly loud, and it is amazing that anything is able to silence a firearm. However, the principle behind a gun silencer is surprisingly simple. Check out our HowStuffWorks article to learn more about silencers.

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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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The moon's gravitational pull is strong enough to affect the oceans on Earth, resulting in low and high tides. Discover exactly how high and low tides work in this podcast from HowStuffWorks.com.

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