BrainStuff

Latest Episodes:

What is the battery light on your car's dashboard for? Apr 06, 2016

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Cars rely on batteries to keep their electrical parts running and alternators to keep their batteries alive. Battery lights come into play when there's a charging problem. Find out more about battery lights in this podcast from HowStuffWorks.com.

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Why is cotton more absorbent than nylon? Apr 04, 2016

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When water comes in contact with the complex molecules that make up cotton and nylon, it causes a different action in each material -- but why? Listen in as Marshall Brain breaks down the science behind water absorption in this podcast.

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How do motion sensors work? Apr 01, 2016

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There are many kinds of motion sensors, from active to passive systems. Get the scoop on how myriad motion sensing systems work in this podcast from HowStuffWorks.com.

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What does a modern smart house look like? Mar 30, 2016

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What makes a "smart" house so smart? These high-tech houses intelligently use resources and are responsive to the needs and habits of their occupants. Tune in to learn more.

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Is it possible to turn coal into oil? Mar 28, 2016

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As the demand for dwindling oil supplies rises, scientists across the world search for new ways to generate energy. In this episode, Marshall looks at a new attempt to stave off the looming fossil fuel crisis: Turning coal into oil. Tune in to learn more.

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How do artificial sweeteners work? Mar 25, 2016

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At many restaurants, a little container on the table will have regular sugar in addition to artificial sweeteners. But what exactly are artificial sweeteners, and how do they differ in comparison to regular sugar? Listen in to find out.

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Can people really build missiles from scratch? Mar 23, 2016

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In the film Salt, Angelina Jolie's character creates a missile from handy household ingredients -- but could this happen in real life? Tune in as Marshall breaks down the science behind improvised explosives.

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How does a pressurized airplane cabin work? Mar 21, 2016

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How does a pressurized airplane cabin work -- more importantly, what happens when the pressure fails? Join Marshall Brain as he breaks down the science behind cabin pressurization.

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What are chiggers, and how do they bite you? Mar 18, 2016

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If you go outdoors during the right time of year, you may be bitten by chiggers. But what are these creatures, and why do they attack unsuspecting humans? Listen in as Marshall Brain breaks down the life cycle of the chigger -- and how it can affect you.

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Why do people choke under pressure? Mar 16, 2016

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Anyone who watched the Master's tournament knows that Rory McElroy famously choked under pressure -- but what exactly happened? In this podcast, Marshall explores the science behind choking in stressful or intimidating situations

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