Do Crosswalk and 'Close Door' Buttons Really Do Anything?
Are the buttons we push to cross streets, close elevator doors, and nudge the office thermostat really connected to anything? Some aren’t! Learn how these placebo buttons (don’t) work.
Most Watched in BrainStuff
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: 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: 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: 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.
Recent Videos in BrainStuff
BrainStuff: How Does Anxiety Work?
Anxiety is a normal, healthy response for the human body. But when it interferes with daily life it can become a disorder. We investigate anxiety's symptoms and biochemistry to learn how it can become irrational... and how you treat it.
BrainStuff: How Does Aspirin Work?
How does aspirin target your pain? The plants that aspirin were derived from have been used as medicine for about 6000 years, we finally discovered how it works in 1971, and Lauren explains it to you now.
BrainStuff: What Is Satanism?
Just the term "satanism" is controversial. But what's actually going on with this counter-culture religion that values individualism and nonconformity?