BrainStuff: How Does A Gas Nozzle Know When To Shut Off?

If you've ever put gas in a car, you've probably noticed how the gas pump shuts off when your tank is full. But how does it know to do that? Learn more about the clever mechanism that keeps your gas tank from overflowing in this episode.

BrainStuff: How Do Farts Work?

Sure, flatulence is embarrassing. But why do we do it?

BrainStuff: Where's the best place to sit in a movie theater?

When it comes to where you should sit in a movie theater to get the best experience, it's mostly a matter of preference. Except when it comes to sound. Find out why -- and where you should sit -- in this episode.

BrainStuff: How Is An Autopsy Performed?

When you need someone to exam a corpse to determine a cause of death, how do they conduct the autopsy?

BrainStuff: How Do GPS Coordinates Work?

So you’ve seen those location-tagging numbers on maps and GPS devices before, but do you actually know what they mean? Brainstuff is here to fill you in.

BrainStuff: Why Do People In Old Movies Talk Weird?

It’s not quite British, and it’s not quite American – so what gives? Why do all those actors of yesteryear have such a distinct and strange accent?

BrainStuff: BrainStuff Outtakes 02

BrainStuff Outtakes.

BrainStuff: Is Glass A Liquid Or A Solid?

There seems to be a bit of debate over the physical state of glass. Find out about glass' actual state of matter in this episode of BrainStuff.

BrainStuff: Why Do We 'See Stars'?

When you bash your head and “see stars,” what’s going on? Why does your brain pick this moment to give you a laser light show? Josh explains the phenomenon of seeing stars in this Brainstuff video.

BrainStuff: Why Does Alka-Seltzer Fizz?

The fizzing you see when you drop an Alka-Seltzer tablet in water is the same sort of fizzing that you see from baking powder. This reaction is caused by an acid reacting with a base. Check out this BrainStuff episode to learn more.

BrainStuff: How Does Bread Rise?

Lauren explores what's actually happening when we make bread. Hint: It involves plenty of yeast, trapping carbon dioxide and linking gluten molecules.

BrainStuff: How Do Polygraph Machines Work?

Also known as 'lie detectors,' polygraphs are used to record an individual's vital signs, such as breathing rate, pulse, and so forth. Check out this episode of BrainStuff to learn more about polygraphs and the art of lie detection.