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What Determines Your Hair Color?

 What Determines Your Hair Color?

There's a lot of natural variation in the color of human hair. What's the physical explanation for the difference? See more »

Why Is Bacon Considered A Breakfast Food?

 Why Is Bacon Considered A Breakfast Food?

Sure, everyone knows that bacon and eggs are a traditional breakfast - but why? Listen in to learn how Freud's nephew invented PR and changed the way America eats breakfast. See more »

What Are Brain Orgasms And ASMR Whisperers?

 What Are Brain Orgasms And ASMR Whisperers?

Christian delves into the euphoric sensations of the Autonomous Sensory Meridian Response (ASMR) and reveals what triggers it and how science has responded so far. See more »

The Way We Think About Sugar Is Going To Change

 The Way We Think About Sugar Is Going To Change

The FDA recently changed their Nutrition Facts label to include added sugars. But why? See more »

How Do Erasers Erase?

 How Do Erasers Erase?

Erasers lift our mistakes right off the page, but it's not magic - it's the microscopic physics of stickiness. See more »

Why Do Some People Faint At The Sight of Blood?

 Why Do Some People Faint At The Sight of Blood?

Christian explains the science of why people faint at the sight of blood. See more »

Do Crosswalk and "Close Door" Buttons Really Do Anything?

 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. See more »

How Is An Autopsy Performed?

 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? See more »

Why Do Helicopter Blades Look Weird On Video?

 Why Do Helicopter Blades Look Weird On Video?

Helicopter blades and other fast spinning objects often produce strange effects on camera. Christian explains why. See more »

What Is American Cheese Really Made Of?

 What Is American Cheese Really Made Of?

Processed American cheese is super cheap, consistent, shelf-stable, and orange. Christian explains how this science cheese is made. See more »