Tag «pbs digital studios»

Who Invented the Meter?

Who Invented the Meter?

This is a meter. But it’s not THE meter. The meter isn’t a physical object, locked away in a secret vault somewhere. The meter is a math problem. Take the distance light travels in one second and cut it into this many chunks, that’s how we define a meter. But why that number? Why not …

The Most Important Moment in the History of Life

[Music] In our last video, I talked about why and how life became multicellular… one of the most important transitions in our evolutionary history, but still one that happened dozens of times Today I’m going to tell you about a different event, one so rare it only happened once in the nearly 4 billion years …

How An Igloo Keeps You Warm

How An Igloo Keeps You Warm

[MUSIC] For thousands of years, humans, and plants and animals long before that, have been using frozen “sky water” to keep warm. Which sort of doesn’t make sense. Because snow is cool. You might even say it’s… ice cold. YEEAAHHHHH! No one knows for sure who built the first igloo, but with the right fit …

7 Scientific Urban Legends Debunked!

7 Scientific Urban Legends Debunked!

Hey smart people Joe here – stay tuned for a special announcement after the video. So I used to have this shirt. I know at least one of you was watching back in 2013… Hey Kyle. For the rest of you are probably wondering the same thing as me. What’s up with the hair? What …

A Brief History of Men’s Underwear

A Brief History of Men’s Underwear

Boxers, briefs, trunks, tighty-whiteys. Although some refer to underwear as “unmentionables,” men’s underwear actually has a fascinating history that goes beyond its practical uses of protection, cleanliness, and modesty. Alan Greenspan, the chair of the US Federal Reserve from 1987 to 2006, suggested in an interview with National Public Radio, that the underwear industry is …

How The Toilet Changed History

[PBSDS BUMPER] The average person gets rid of approximately 130 grams of poop every day. Maybe twice that much if they’ve had Taco Bell. Seven and a half billion of us on Earth? That’s a literal mountain of human poop every day. Yet most of *us* get to pretend it doesn’t exist, all thanks to …

A History Of Robots

A History Of Robots

[MUSIC PLAYING] [COMPUTER BEEPING] [CAMERA CLICKING] All right. [INAUDIBLE] That’s it? Go get me some models, OK? OK. Why are you in a robot costume? (ROBOT VOICE) Robots are cool. I thought we agreed no more robot costumes. (ROBOT VOICE) Does not compute. [ROBOT NOISES] You know what? We were going to do a playlist …