MinutePhysics
Do Photons Cast Shadows?
This video is about two-photon (gamma-gamma) physics, and how photons can interact with each other - either mediated by a passing lepton, or gravitationally via lensing, or via vacuum fluctuation pair production of vertical particles...
PBS
Kill the Mathematical Hydra
How do you defeat a creature that grows two heads for every one head you chop off? You do the math.
3Blue1Brown
Ever wonder how Bitcoin (and other cryptocurrencies) actually work?
How does bitcoin work? What is a "block chain"? What problem is this system trying to solve, and how does it use the tools of cryptography to do so?
PBS
Is Buying Call of Duty a Moral Choice?
If you play video games, you've shot a gun. And those guns are REALISTIC. So real that many are actually LICENSED by IRL arms dealers. Which means that when you buy a video game, you're also putting money in the pockets of those gun...
TED Talks
TED: How to fix broken supply chains | Dustin Burke
Supply chain challenges are real, but they're not new, says global trade expert Dustin Burke. In the face of disruptions ranging from natural disasters to pandemics, how do we make sure supply chains can keep up? Burke offers a...
Crash Course
Free Will, Witches, Murder, and Macbeth, Part 1: Crash Course Literature 409
The Sound! The Fury! Today, we're talking about Shakespeare's Scottish play, Macbeth. So, was Macbeth really predestined to do all the murdering and bad kinging and other terrible stuff? That's the big question in Macbeth, and it's one...
Crash Course
Experimental and Documentary Films: Crash Course Film History
It's Craig's last episode of Film and in it he's going to talk about weird stuff... and real stuff. Experimental and Documentary films could each take up their own Crash Course series. The different styles and intents of different...
SciShow
SciShow Marches for Science
SciShow heads to Washington D.C. to join the March for Science and interview people about why they feel science is important to them.
Be Smart
Why People Don't Believe In Climate Science
Scientists overwhelmingly agree that our climate is changing, Earth is getting warmer, sea levels are rising, and it's primarily because of humans putting lots of carbon dioxide in the atmosphere. Yet 4 in 10 Americans aren't convinced....
PBS
Are Virtual Video Game Economies Becoming Real?
The idea that a collection of pixels can be sold for actual money might be confusing to some, as they are neither true "objects" you can hold nor "ideas" that can be considered intellectual property. But despite the lack of tangibility,...
TED-Ed
TED-Ed: Is telekinesis real? - Emma Bryce
Telekinesis, the ability to manipulate matter with the mind alone, is a trait exhibited by some of the most iconic fictional characters, including Neo, Yoda, and, of course, Carrie. But is this mind control actually possible in real...
Crash Course
Leonardo DiCaprio & The Nature of Reality: Crash Course Philosophy
Today Hank gains insight from that most philosophical of figures...Leonardo DiCaprio. In this episode, we’re talking about the process of philosophical discovery and questioning the relationship between appearance and reality by taking a...
TED Talks
Why there's no such thing as objective reality | Greg Anderson
In the grand scheme of history, modern reality is a bizarre exception when compared to the worlds of ancient, precolonial and Indigenous civilizations, where myths ruled and gods roamed, says historian Greg Anderson. So why do Westerners...
TED Talks
TED: America's forgotten working class | J.D. Vance
J.D. Vance grew up in a small, poor city in the Rust Belt of southern Ohio, where he had a front-row seat to many of the social ills plaguing America: a heroin epidemic, failing schools, families torn apart by divorce and sometimes...
TED Talks
TED: Fractals and the art of roughness | Benoit Mandelbrot
At TED2010, mathematics legend Benoit Mandelbrot develops a theme he first discussed at TED in 1984 -- the extreme complexity of roughness, and the way that fractal math can find order within patterns that seem unknowably complicated.
TED Talks
TED: Political common ground in a polarized united States | Gretchen Carlson, David Brooks
How can we bridge the gap between left and right to have a wiser, more connected political conversation? Journalist Gretchen Carlson and op-ed columnist David Brooks share insights on the tensions at the heart of American politics today...
TED Talks
Meditations on the intersection of humanity and technology | Olivia Arthur
Documentary photographer Olivia Arthur has been exploring a new frontier: the evolution of the blurring line between humanity and technology. In this meditative talk, she shows her work documenting the remarkable ways humans have merged...
Crash Course
Schizophrenia & Dissociative Disorders: Crash Course Psychology
Did you know that Schizophrenia and Multiple Personality Disorder aren't the same thing? Did you know that we don't call it Multiple Personality Disorder anymore? In this episode of Crash Course Psychology, Hank takes us down the road of...
TED Talks
TED: The 4 commandments of cities | Eduardo Paes
Eduardo Paes is the mayor of Rio de Janeiro, a sprawling, complicated, beautiful city of 6.5 million. He shares four big ideas about leading Rio -- and all cities -- into the future, including bold (and do-able) infrastructure upgrades...
TED Talks
TED: How to foster productive and responsible debate | Ishan Bhabha
The clash of ideas is fundamental to creativity and progress, but it can also be deeply destructive and create divisions within companies, communities and families. How do you foster productive debate while protecting against harmful...
TED Talks
TED: 4 ways to redefine power at work to include women of color | Rha Goddess and Deepa Purushothaman
With many women of color considering exiting the workforce due to unfair conditions, it's time to reshape systems in order to put an end to this massive loss of talent. Exposing the harmful repercussions of racist, toxic organizational...
TED Talks
Emily Pilloton: Teaching design for change
Designer Emily Pilloton moved to rural Bertie County, in North Carolina, to engage in a bold experiment of design-led community transformation. She's teaching a design-build class called Studio H that engages high schoolers' minds and...
SciShow
What Causes Growing Pains?
Growing Pains are real, but no one seems to know why exactly kids get them. Learn what we do know here on SciShow Quick Question!
TED Talks
Brandon Clifford: Architectural secrets of the world's ancient wonders
How did ancient civilizations move massive stones to build Stonehenge, the Pyramids and the Easter Island statues? In this quick, delightful talk, TED Fellow Brandon Clifford reveals some architectural secrets of the past and shows how...