BrainStuff

Medical leeches are raised in captivity and help patients heal wounds. Discover how leeches and other parasites are used for medical purposes in this podcast from HowStuffWorks.com.

Most of the water on the planet is salty, so people have come up with various ways to turn it into freshwater. Explore three methods of desalinating water in this podcast from HowStuffWorks.com....

Most of the water on the planet is salty, so people have come up with various ways to turn it into freshwater. Explore three methods of desalinating water in this podcast from HowStuffWorks.com.

Inside the hard drive of many computers, a small arm moves across the face of the hard disk. Tune in to this podcast from HowStuffWorks.com to discover how the movement of this arm produces sound...

Inside the hard drive of many computers, a small arm moves across the face of the hard disk. Tune in to this podcast from HowStuffWorks.com to discover how the movement of this arm produces sound...

Space suits provide oxygen, pressurize air, and control an astronaut's temperature. Learn more about space suits in this classic HowStuffWorks podcast, one of our editors' hand-picked favorites....

Space suits provide oxygen, pressurize air, and control an astronaut's temperature. Learn more about space suits in this classic HowStuffWorks podcast, one of our editors' hand-picked favorites.

A light year is a way of measuring distance -- specifically, the distance light can travel in one year. Just how far is that? Check out this classic Brainstuff podcast from HowStuffWorks' archives...

A light year is a way of measuring distance -- specifically, the distance light can travel in one year. Just how far is that? Check out this classic Brainstuff podcast from HowStuffWorks' archives...

The Northern Lights, also known as the aurora borealis, occur when charged electrons from the sun interact with the Earth's magnetic field. Learn more about auroras and solar activity in this...

The Northern Lights, also known as the aurora borealis, occur when charged electrons from the sun interact with the Earth's magnetic field. Learn more about auroras and solar activity in this episode.

Learn more about melting ice caps, global warming and rising sea levels in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Learn more about melting ice caps, global warming and rising sea levels in this episode of BrainStuff.

In many cases, it's possible to recover files that have been deleted by using your computer's Recycle Bin. Marshall Brain reveals ways to recover deleted files -- and how to erase them permanently...

In many cases, it's possible to recover files that have been deleted by using your computer's Recycle Bin. Marshall Brain reveals ways to recover deleted files -- and how to erase them permanently...

When white light hits a film of oil floating on water, most of it passes through the film, but some of the light is reflected off the top and bottom layers of the film. Check out this HowStuffWorks...

When white light hits a film of oil floating on water, most of it passes through the film, but some of the light is reflected off the top and bottom layers of the film. Check out this HowStuffWorks...

Phone companies use generators to ensure that landline phones will work, even in the event of a power outage. Learn more about phone systems in this HowStuffWorks podcast. Learn more about your...

Phone companies use generators to ensure that landline phones will work, even in the event of a power outage. Learn more about phone systems in this HowStuffWorks podcast.

By cooling smoke, the hydrocarbons forming smoke can be condensed, thinned, and bottled in a liquid form. Learn about the process of bottling liquid smoke in this HowStuffWorks podcast. Learn more...