SciShow
The Secret to Big Gains? Healthy Gut Bacteria #inmice | SciShow News
If you go to the gym often enough, you might be familiar with protein powders and shakes, but one study thinks that the secret to big gains might actually be your gut bacteria.
3Blue1Brown
The most unexpected answer to a counting puzzle: Colliding Blocks - Part 1 of 3
A puzzle involving colliding blocks where the number pi, vey unexpectedly, shows up.
3Blue1Brown
Pi hiding in prime regularities
A beutiful derivation of a formula for pi. At first, 1-1/3+1/5-1/7+1/9-.... seems unrelated to circles, but in fact there is a circle hiding here, as well as some interesting facts about prime numbers in the context of complex numbers.
TED-Ed
How much electricity does it take to power the world? | TED-Ed
All around the world, millions of people are flipping a switch, plugging in, and pressing an 'on' button every second. So how much electricity does humanity use? And how much will we need in the future? Discover how much energy it takes...
TED-Ed
TED-ED: The history of museums - J. V. Maranto
Museums have been a part of human history for over 2,000 years -- but they weren't always like the ones we visit today. J.V. Maranto uncovers the evolution of museums, from the first museum in 530 BC (curated by a princess) to PT...
TED-Ed
TED-Ed: How do blood transfusions work? | Bill Schutt
In 1881, doctor William Halsted rushed to help his sister Minnie, who was hemorrhaging after childbirth. He quickly inserted a needle into his arm, withdrew his own blood, and transferred it to her. After a few uncertain minutes, she...
TED Talks
TED: What Saturn's most mysterious moon could teach us about the origins of life | Elizabeth "Zibi" Turtle
NASA's Dragonfly -- a robotic rotorcraft-lander that's designed to hop across the surface of an extraterrestrial body -- is set to voyage deep into the solar system to explore Titan, Saturn's largest moon, in 2026. Planetary scientist...
SciShow
Groups That Chant Together, Stay Together
If you've ever been part of a huge crowd, like at a sporting event, you've probably seen people clap, sing, and chant together in sync. How do big groups of individuals all manage to do the same thing at the same time, even when there's...
TED Talks
TED: 5 transformational policies for a prosperous and sustainable world | Johan Rockstrom
In a talk about how we can build a robust future without wrecking the planet, sustainability expert Johan Rockstrom debuts the Earth3 model -- a new methodology that combines the UN Sustainable Development Goals with the nine planetary...
3Blue1Brown
The most unexpected answer to a counting puzzle
A puzzle involving colliding blocks where the number pi, vey unexpectedly, shows up.
SciShow Kids
Make Your Own Rock Candy!
Jessi and Squeaks learn all about crystallization while they make some yummy rock candy! Second Grade Next Generation Science Standards Disciplinary Core Ideas: PS1.A: Structure and Properties of Matter - Different kinds of matter exist...
TED Talks
Jane Fonda: Why I protest for climate justice
At age 81, actor and activist Jane Fonda is putting herself on the line for the planet -- literally. In a video interview with TEDWomen curator Pat Mitchell, Fonda speaks about getting arrested multiple times during Fire Drill Fridays,...
TED-Ed
TED-Ed: The art forger who tricked the Nazis
It was one of the strangest trials in Dutch history. The defendant in a 1947 case was an art forger who had counterfeited millions of dollars worth of paintings. But he wasn’t arguing his innocence— in fact, his life depended on proving...
SciShow
Why Do We Have Bright Ideas in the Shower?
Have you ever had a great idea or a burst of insight while taking a shower? Well, it turns out that shower thoughts are more than just an internet phenomenon, and understanding them better can help us harness their power for good!
TED Talks
Hubertus Knabe: The dark secrets of a surveillance state
Tour the deep dark world of the East German state security agency known as Stasi. Uniquely powerful at spying on its citizens, until the fall of the Berlin Wall in 1989 the Stasi masterminded a system of surveillance and psychological...
Crash Course
Neural Networks - Crash Course Statistics
Today we're going to talk big picture about what Neural Networks are and how they work. Neural Networks, which are computer models that act like neurons in the human brain, are really popular right now - they're being used in everything...
TED Talks
TED: How augmented reality could change the future of surgery | Nadine Hachach-Haram
If you're undergoing surgery, you want the best surgical team to collaborate on your case, no matter where they are. Surgeon and entrepreneur Nadine Hachach-Haram is developing a new system that helps surgeons operate together and train...
Crash Course
Training Neural Networks
Today we’re going to talk about how neurons in a neural network learn by getting their math adjusted, called backpropagation, and how we can optimize networks by finding the best combinations of weights to minimize error. Then we’ll send...
TED Talks
TED: The awful logic of land mines -- and an app that helps people avoid them | Carlos Bautista
Fifty years of armed conflict in Colombia has left the countryside riddled with land mines that maim and kill innocent people who happen across them. To help keep communities safe from harm, TED Resident Carlos Bautista is developing an...
TED Talks
Muhammed Idris: What refugees need to start new lives
Every minute, 20 people are newly displaced by climate change, economic crisis and political instability, according to the UNHCR. How can we help them overcome the barriers to starting new lives? TED Resident Muhammed Idris is leading a...
TED Talks
Danny Hillis: Back to the future (of 1994)
From deep in the TED archive, Danny Hillis outlines an intriguing theory of how and why technological change seems to be accelerating, by linking it to the very evolution of life itself. The presentation techniques he uses may look...
SciShow Kids
Why Do We Dream?
Jessi had the weirdest dream last night and wants to share with you why our brains make dreams.
TED Talks
TED: How a "Hi Level" mindset helps you realize your potential | Cordae
What does it take to build a legacy? Hip-hop artist Cordae tells how he went from mixtape-dropping high school kid to Grammy-nominated music star whose "Hi Level" mindset helps him achieve his dreams.
TED-Ed
TED-Ed: Inside OKCupid: The math of online dating - Christian Rudder
When two people join a dating website, they are matched according to shared interests and how they answer a number of personal questions. But how do sites calculate the likelihood of a successful relationship? Christian Rudder, one of...