Public speaking isn't easy for everyone. It can be nerve racking and even scary. But, in this episode of Crash Course Business Soft Skills, Evelyn talks to us about S.U.C.C.E.S and how we can use it to help us be prepared to speak to a...

We don't need another Carl Sagan. Because he lives on.

In some parts of the world, it's easier to get an automatic rifle than a glass of clean drinking water. Is this just the way it is? Samantha Nutt, doctor and founder of the international humanitarian organization War Child, explores the...

Conservatives and liberals both believe that they alone are motivated by love while their opponents are motivated by hate. How can we solve problems with so much polarization? In this talk, social scientist Arthur Brooks shares ideas for...

Moser's circle problem, and its solution.

Speaking at TED in 1998, Rev. Billy Graham marvels at technology's power to improve lives and change the world -- but says the end of evil, suffering and death will come only after the world accepts Christ. A legendary talk from TED's...

The fact that no one knows the answer to this question is what makes it exciting. The story of physics has been one of an ever-expanding understanding of the sheer scale of reality, to the point where physicists are now postulating that...

Vincent Cochetel was held hostage for 317 days in 1998, while working for the UN High Commissioner on Refugees in Chechnya. For the first time, he recounts the experience — from what it was like to live in a dark, underground chamber,...

There's no actual law against women driving in Saudi Arabia. But it's forbidden. Two years ago, Manal al-Sharif decided to encourage women to drive by doing so -- and filming herself for YouTube. Hear her story of what happened next.

Filmmaker Newton Aduaka shows clips from his powerful, lyrical feature film "Ezra," about a child soldier in Sierra Leone.

Meet Todai Robot, an AI project that performed in the top 20 percent of students on the entrance exam for the university of Tokyo -- without actually understanding a thing. While it's not matriculating anytime soon, Todai Robot's success...

"Magic is a great analogy for how we edit reality and form a story -- and then mistake that story for the truth," says psychological illusionist Derren Brown. In a clever talk wrapped around a dazzling mind-reading performance, Brown...

It's Green vs. Green in this week's quiz show as Hank battles Katherine to see who takes home all the marriage points.

Artist Safwat Saleem grew up with a stutter -- but as an independent animator, he decided to do his own voiceovers to give life to his characters. When YouTube commenters started mocking his Pakistani accent, it crushed him, and his...

Measuring 'intellect' is a difficult task. Check out one way scientists are attempting to make this endeavor more testable.

Explorer Ben Saunders wants you to go outside! Not because it’s always pleasant and happy, but because that’s where the meat of life is, “the juice that we can suck out of our hours and days.” Saunders’ next outdoor excursion? To try to...

A short guide for parents teaching science during the Coronavirus Pandemic of 2020.

Spider venom can stop your heart within minutes, cause unimaginable pain -- and potentially save your life, says zoologist Michel Dugon. As a tarantula crawls up and down his arm, Dugon explains the medical properties of this potent...

Web cartoonist Randall Munroe answers simple what-if questions ("what if you hit a baseball moving at the speed of light?") using math, physics, logic and deadpan humor. In this charming talk, a reader's question about Google's data...

Scientists found, on a Kenyan plateau, a tree and a monkey that you might just know. But humans make changes, as we often do, and now these small creatures may soon fade from view.

In this episode of SciShow Quiz Show, host Michael Aranda test the wits of contestants Dr. Lindsey Doe and Hank Green.

The Tyrannosaurus genus might have been more diverse than we thought. And researchers show how the composition of the early Earth could have accelerated its move towards habitability.

Sarah Jones changes personas with the simplest of wardrobe swaps. In a laugh-out-loud improvisation, she invites 11 "friends" from the future on stage—from a fast-talking Latina to an outspoken police officer—to ask them questions...

In the days following the tragic South Asian tsunami of 2004, the Rev. Tom Honey pondered the question, "How could a loving God have done this?" Here is his answer.