Laminated safety glass has been around since the 1920s. Find out how safety glass is made, how it...
03:25
Podcasts de Marshall Brain
Today, Pez candy dispensers are a sweet treat for children and a novelty for adults. Originally,...
03:19
Sea level is an important measurement, but it's also a complicated one. Find out why in this...
04:11
Is it true that a diesel engine can operate underwater?
Under certain circumstances, diesel engines can operate while submerged in water. Find out what...
03:24
What causes that howling sound in PA systems?
A public address system's speakers emit strange noises, or feedback, when sound gets...
02:11
Dry ice is different from regular ice in several ways. Find out what makes dry ice so unique --...
03:27
A light year is a way of measuring distance -- specifically, the distance light can travel in one...
02:51
Why do your ears pop when you dive in a deep pool?
Have you ever wondered why your ears pop when you plunge into the deep end of a swimming pool?...
02:39
How do artificial sweeteners work?
At many restaurants, a little container on the table will have regular sugar in addition to...
09:00
Can people really build missiles from scratch?
In the film Salt, Angelina Jolie's character creates a missile from handy household ingredients...
05:44
Is it possible to turn coal into oil?
As the demand for dwindling oil supplies rises, scientists across the world search for new ways...
05:49
Why is cotton more absorbent than nylon?
When water comes in contact with the complex molecules that make up cotton and nylon, it causes a...
03:36
There are many kinds of motion sensors, from active to passive systems. Get the scoop on how...
02:46
What does a modern smart house look like?
What makes a "smart" house so smart? These high-tech houses intelligently use resources and are...
05:20
What are other ways to store energy besides batteries?
Batteries are a common way to store energy, but there are many others. Discover more energy...
04:23
How does the common cold work?
We've all had a cold at one point or another; it entails an uncomfortable cocktail of symptoms...
02:28
How do dry chemical fire extinguishers work?
Three elements create a fire. Discover what they are and how dry chemical fire extinguishers...
03:07
How do they make fortune cookies?
You've probably had countless fortune cookies after Chinese meals, but have you ever wondered how...
02:18
Learn about the causes of gas -- and not the kind you put in your car -- in this podcast from...
02:39
Milk is often touted as a "miracle drink," full of restorative, nutritional properties. And...
03:09
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