Right Now in BrainStuff

BrainStuff: How Can There Be Seedless Grapes?

Seedless grapes are the most common kind on the market, but have you ever wondered how a grape can be seedless? How does it grow? Discover how seedless grapes accidentally came about -- and how they grow -- in this episode of BrainStuff.

BrainStuff: What Is Chewing Gum Made Of?

Up until World War II, chewing gum was made of a substance called chicle. Check out this BrainsStuff episode to learn more about the ingredients of modern chewing gum.

BrainStuff: What Are Hot Dogs Made From?

Hot dogs were first created in Frankfurt, Germany. But what exactly are they made from? Check out this episode to learn more about the mysterious ingredients of hot dogs.

BrainStuff: How Does Dynamite Work?

Dynamite is a type of chemical explosive. Discover how explosives from gasoline to dynamite work in this episode of BrainStuff.

BrainStuff: Why Do Human Beings Have Eyebrows?

Eyebrows are prominent human features, but what purpose do they serve? Scientists think they help keep stuff out of our eyes and aid in nonverbal communication, among other things. Learn more about eyebrows in this episode.

BrainStuff: How Much Oxygen Does a Person Consume in a Day?

Ever wonder how much oxygen you breathe in a day? Watch this episode of BrainStuff and find out!

BrainStuff: How many balloons would it take to lift you off the ground?

Balloons are often filled with helium, which has a lifting force of one gram per meter. It's possible to assemble enough balloons to lift yourself from the ground -- but how many balloons does it take? Tune into this episode to learn more.

BrainStuff: How Quickly Does Hair Grow?

On average, human hair grows a small amount each day. Watch as Jonathan and Lauren explain hair growth in this episode of BrainStuff.

BrainStuff: Why Do Feet Stink?

What causes stinky, smelly feet? Sweat and bacteria. Find out exactly how bacteria turn sweat into malodorous feet in this episode.

BrainStuff: How Do You Decaffeinate Coffee and Tea?

There are multiple methods of removing caffeine from naturally caffeinated plant products. Learn more about these processes -- and how much caffeine they really remove -- in this episode.

BrainStuff: Is Chocolate Poisonous to Dogs?

Under the right conditions, chocolate can indeed be deadly for dogs. Tune in to learn more about the compound in chocolate that makes it dangerous for dogs (and how much is too much) in this episode of BrainStuff.

What makes some ice cloudy and some perfectly clear? Discover the answer and learn how to make your own batch of clear cubes in this HowStuffWorks podcast.

The purpose of a refrigerator is to slow the growth of bacteria -- since some foods don't freeze well, they can't be placed in a freezer. Check out this HowStuffWorks podcast to learn the ideal temperature for your refrigerator.

Adding random access memory -- or RAM -- to your computer can, to a degree, make the machine faster. Check out this podcast from HowStuffWorks to learn how RAM affects your computer.

The octane rating of gasoline indicates how much a fuel can be compressed before it ignites. When gas ignites due to compression, knocking occurs within the engine. Check out this HowStuffWorks podcast to learn more about octane and engines.

Steel is an amazing metal. Many different varieties of steel exist, and some types of steel are better for certain tasks. Check out this HowStuffWorks podcast to learn how case hardening allows manufactures to get the best of multiple types of steel.

Batteries -- particularly car batteries -- seem to go dead and then come back to life after a resting period. How does this self-recharging feature of batteries work? Find out in this episode of BrainStuff.

When you stand at the water's edge and look out toward the horizon, how far away can you actually see? Check out this HowStuffWorks podcast to learn more about the horizon and the curvature of Earth.

As of 1999, all TV sets sold in the Untied States are required to contain a viewer-control chip, also known as a v-chip. Check out this HowStuffWorks podcast to learn more about v-chips and television ratings.

As hair cells form in follicles, they push other cells out of the follicle. Check out this HowStuffWorks podcast to learn more about your hair's growth and rest phases.