BrainStuff

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How Car Thermostats Work Mar 06, 2009

Show notes

Any liquid-cooled car engine has a thermostat that blocks the flow of coolant to the radiator. Learn how the thermostat works to reduce wear, deposits and emissions in this podcast from HowStuffWorks.com.

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Why can boats float on water? Mar 04, 2009

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If a boat weighs 1,000 pounds, it will sink into the water until it displaces 1,000 pounds of water. Tune in to learn how the shape of a boat allows it to displace enough water to float in this podcast from HowStuffWorks.com.

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How the Virtual First-Down Line Works Mar 02, 2009

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Virtual first down lines are used to indicate where play resumes in football -- but how do they work? Listen in as Marshall Brain explains how the technology superimposes a virtual line in this podcast on HowStuffWorks.com.

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What is dioxin? Feb 25, 2009

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Dioxin is an organic chemical that consists of benzene, oxygen and chlorine. This chemical is also toxic. Tune in to learn more about dioxin and Agent Orange in this podcast from HowStuffWorks.com.

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How Activated Charcoal Works Feb 20, 2009

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If you look on the label of a water filter, you'll often see the filter contains activated charcoal -- but what exactly is this stuff? Tune in as Marshall Brain explains the nature of activated charcoal in this podcast from HowStuffWorks.com.

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How does SETI at home work? Feb 11, 2009

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SETI -- the Search for Extraterrestrial Intelligence -- is an enormous, global undertaking meant to detect signs of life beyond our solar system. Learn how you can help from home in this podcast from HowStuffWorks.

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What is silica gel? Feb 02, 2009

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Everyone's familiar with those little packets of silicate gel, found in thousands of products -- but what exactly do they do? Check out this HowStuffWorks podcast and learn more about silica gel.

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Why doesn't the vacuum of space suck away Earth's atmosphere? Jan 30, 2009

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It's often said that "nature abhores a vacuum." If that's true, then why doesn't the vacuum of space suck away our atmosphere? Tune in as Marshall Brain explains the science behind vacuums in this HowStuffWorks podcast.

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How Vacuums Work Dec 15, 2008

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If a balloon was filled by a vacuum -- rather than helium or air -- would it float? Check out this HowStuffWorks podcast to learn the science behind balloons and vacuum.

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What is an MRE? Dec 12, 2008

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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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