Right Now in BrainStuff

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.

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.

The idea behind a gravity assist is to use a planet's motion to accelerate a satellite. Check out our article on HowStuffWorks to learn more about the effects of gravity on satellites.

Wind farms and solar power plants are promising sources of renewable energy, but they're not as reliable as conventional power sources. In this episode, Marshall explains how large-scale storage technologies could make solar and wind power more viable.

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.

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.

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.

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.

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.

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.