Do Cell Phones Cause Brain Tumors?
Adults Gadgets Health TechnologyDo cell phones cause brain tumors? Conflicting results are resolved by looking at the big picture.
How languages evolve - Alex Gendler
Adults History LanguageOver the course of human history, thousands of languages have developed from what was once a much smaller number. How did we end up with so many? And how do we keep track of them all? Alex Gendler explains how linguists group languages into language families, demonstrating how these linguistic trees give us crucial insights into the past.
Project Loon - Google's Internet Balloons - Future Thinking - Head Squeeze
Adults Internet Culture Physics TechnologyWe are becoming increasingly more dependent on the internet to help run our lives. But much of the planet is outside the web, zones that are without web coverage. Ordinarily, this is more of a nuisance than a calamity. But in the aftermath of disasters, restoring internet coverage can be the difference between life and death.
Lego-style apartment transforms into infinite spaces
Adults Construction CreativityWhen Christian Schallert isn't cooking, dressing, sleeping or eating, his 24 square meter (258 square feet) apartment looks like an empty cube. To use a piece of furniture, he has to build it.
How folding paper can get you to the moon - Adrian Paenza
Adults Math SpaceCan folding a piece of paper 45 times get you to the moon? By seeing what happens when folding just one piece of paper, we see the unbelievable potential of exponential growth. This lesson will leave you wanting to grab a piece of paper to see how many times you can fold it!
The fundamentals of space-time: Part 2 - Andrew Pontzen and Tom Whyntie
Adults Math PhysicsLight always travels at a speed of 299,792,458 meters per second. But if you're in motion too, you're going to perceive it as traveling even faster -- which isn't possible! In this second installment of a three-part series on space-time, CERN scientists Andrew Pontzen and Tom Whyntie use a space-time diagram to analyze the sometimes confounding motion of light.
The science of stage fright (and how to overcome it)
Adults Biology PsychologyHeart racing, palms sweating, labored breathing? No, you're not having a heart attack -- it's stage fright! If speaking in public makes you feel like you're fighting for your life, you're not alone. But the better you understand your body's reaction, the more likely you are to overcome it. Mikael Cho advises how to trick your brain and steal the show.
Deep ocean mysteries and wonders
Adults Ecology Environment NatureIn the deepest, darkest parts of the oceans are ecosystems with more diversity than a tropical rainforest. Taking us on a voyage into the ocean -- from the deepest trenches to the remains of the Titanic -- marine biologist David Gallo explores the wonder and beauty of marine life.
This Skiing Video Is So Bonkers You're Excused If You Think It's A Video Game
Adults Life Nature SportsCandide Thovex conquers France's Val Blanc resort in a mind-blowing clip titled "One Of Those Days 2." He races in and out of what appears to be forbidden territory and straight into the crazy zone.
There's No Such Thing As Cold
Adults Physics WeatherYou've felt cold before. Sometimes it's cold outside. But what if I told you that "cold" isn't real? There's no substance or quantity called "cold" in science. We can't measure the amount of "cold" in something. Instead it's about what's NOT there. In this week's video, learn the difference between heat and temperature, why a wind makes us feel colder, and what it's like to live as a mass of jiggling atoms. This is the physics of cold.
Music as a language - Victor Wooten
Adults Language MusicMusic is a powerful communication tool--it causes us to laugh, cry, think and question. Bassist and five-time Grammy winner, Victor Wooten, asks us to approach music the same way we learn verbal language--by embracing mistakes and playing as often as possible.
This "Be My Eyes" App Lets People With Sight Guide Blind People Over Video Chat
Adults Disability TechnologyBe the eyes for a blind person in need of help remotely through a live video connection if you are sighted or be assisted by the network of sighted users if you are blind. Be My Eyes is all about contributing to and benefiting from small acts of kindness, so hop on board and get involved!
Wanna Know People's Internet Password? All You Need To Do Is Just ASK
Adults Cybersecurity Internet Culture Software EngineeringThe original form of hacking (social engineering) still works like a pro.