Brainstuff
BrainStuff
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When you have an itch, what's happening under your skin?
Skin covers our bodies, so it's very easy for this ...
Skin covers our bodies, so it's very easy for this delicate organ to get irritated. In this episode, Marshall explains why our bodies respond to irritants with an itching sensation -- and why we're programmed to scratch.
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Why can biting on aluminum foil be painful?
When (dental) metal in your mouth comes in contact with ...
When (dental) metal in your mouth comes in contact with aluminum foil, your teeth get a painful shock from the electricity produced. Marshall Brain explains how the voltaic effect plays out in your mouth in this episode.
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Why is a popsicle called a quiescently frozen confection?
Popsicles are also called "quiescently frozen confections" because of the ...
Popsicles are also called "quiescently frozen confections" because of the way they're frozen. Learn more about how flavored ice treats are made -- and what distinguishes them from ice cream -- in this episode.
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How do people pull large objects with their teeth?
Have you ever seen those folks that can pull a ...
Have you ever seen those folks that can pull a whole truck with their teeth? Tune in as Marshall Brain explains the physics behind pulling large objects with your teeth in this episode.
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To maximize happiness, what should you spend money on?
They say that money can't buy happiness, but it can ...
They say that money can't buy happiness, but it can definitely contribute to your well-being. So what exactly should you spend your money on to maximize your happiness? Stuff? Experiences? Marshall Brain investigates in this episode.
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How does WikiLeaks work?
WikiLeaks is a controversial "not-for-profit media organization" that disseminates secret, ...
WikiLeaks is a controversial "not-for-profit media organization" that disseminates secret, leaked information to the public. But how exactly does this group work? And why does it exist? Marshall Brain takes a look at WikiLeaks in this episode.
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Why is organic food more expensive than regular food?
You've probably noticed that organic foods cost significantly more than ...
You've probably noticed that organic foods cost significantly more than non-organic ones, but have you ever wondered why? In this episode, Marshall Brain explains how higher production costs and other factors lead to higher prices in the grocery store.
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How can water cut through steel?
Waterjets are tools that use highly pressurized, focused streams of ...
Waterjets are tools that use highly pressurized, focused streams of water to cut through metal and other solid materials. Learn more about waterjets in this episode.
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How valuable is exercise to your health?
We all know that exercise is an important way to ...
We all know that exercise is an important way to safeguard your health. But how, exactly? In this episode, Marshall discusses the health benefits of exercise -- and how much we need each week in order to take advantage of these benefits.
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Are all blood types needed for donation?
In this episode, Marshall explains how proteins determine your blood ...
In this episode, Marshall explains how proteins determine your blood type -- and why blood types must match for blood transfusions to be successful.
