BrainStuff

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...

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...

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...

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...

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...

On average, human hair grows a small amount each day. Listen in as Marshall Brain explains hair growth in this podcast from HowStuffWorks.com. Learn more about your ad-choices at...

On average, human hair grows a small amount each day. Listen in as Marshall Brain explains hair growth in this podcast from HowStuffWorks.com.

The sound of gunfire is incredibly loud, and it is amazing that anything is able to silence a firearm. However, the principle behind a gun silencer is surprisingly simple. Check out our...

The sound of gunfire is incredibly loud, and it is amazing that anything is able to silence a firearm. However, the principle behind a gun silencer is surprisingly simple. Check out our...

The goal of headers is to make it easier for an engine to push out exhaust gasses. Check out this HowStuffWorks podcast to learn how exhaust headers channel exhaust gasses and improve engine...

The goal of headers is to make it easier for an engine to push out exhaust gasses. Check out this HowStuffWorks podcast to learn how exhaust headers channel exhaust gasses and improve engine...

The moon's gravitational pull is strong enough to affect the oceans on Earth, resulting in low and high tides. Discover exactly how high and low tides work in this podcast from HowStuffWorks.com....

The moon's gravitational pull is strong enough to affect the oceans on Earth, resulting in low and high tides. Discover exactly how high and low tides work in this podcast from HowStuffWorks.com.

Meteors burn up once they hit Earth's atmosphere, and the space shuttle would do the same if it wasn't protected. Learn more about meteors and the technologies that keep the space shuttle from...

Meteors burn up once they hit Earth's atmosphere, and the space shuttle would do the same if it wasn't protected. Learn more about meteors and the technologies that keep the space shuttle from...

In order for a plant to grow and thrive, it needs a number of different chemical elements. Check out this podcast from HowStuffWorks to learn more about fertilizer. Learn more about your ad-choices...

In order for a plant to grow and thrive, it needs a number of different chemical elements. Check out this podcast from HowStuffWorks to learn more about fertilizer.

Diesel submarines are actually hybrid vehicles. Find out why -- and exactly how they work -- in this podcast from HowStuffWorks.com. Learn more about your ad-choices at...

Diesel submarines are actually hybrid vehicles. Find out why -- and exactly how they work -- in this podcast from HowStuffWorks.com.

You've probably heard of the beloved character Thomas the Tank Engine, but have you ever wondered what makes him a tank engine? Discover what sets Thomas apart from his locomotive pals in this...