When something breaks on a spaceship, there's not an auto-shop it can pull up to, so NASA scientists have to get creative.

This chair is my legs -- this chair is my life, says accessibility champion Jane Velkovski, who uses a wheelchair after being diagnosed with Spinal Muscular Atrophy (SMA). With clarity and poise, he shares how his first motorized...

What is a mistake? By talking through examples with his improvisational jazz quartet, Stefon Harris walks us to a profound truth: many actions are perceived as mistakes only because we don't react to them appropriately.

Dr. Ernest Madu runs the Heart Institute of the Caribbean in Kingston, Jamaica, where he proves that -- with careful design, smart technical choices, and a true desire to serve -- it's possible to offer world-class healthcare in the...

We all want to use our talents to create something meaningful with our lives. But how to get started? (And ... what if you're shy?) Writer Kare Anderson shares her own story of chronic shyness, and how she opened up her world by helping...

Networking can seem so hard -- but not if you have the right advice. Try taking advantage of weak ties; you never know what friend of a friend of a friend can aid you in your dreams. Lisa Green Chau outlines how being proactive and...

There's an energy revolution happening in villages and towns across Africa -- off-grid solar energy is becoming a viable alternative to traditional electricity systems. In a bold talk about a true leapfrog moment, Amar Inamdar introduces...

For the young and unemployed in the world's big cities, dreams of opportunity and wealth do come true -- but too often because they're heavily recruited by terrorist groups and other violent organizations. Human rights advocate Mohamed...

What the astronauts felt when they saw earth from space changed them forever. Author and artist Benjamin Grant aims to provoke this same feeling of overwhelming scale and beauty in each of us through a series of stunning satellite images...

What makes a great leader? Management theorist Simon Sinek suggests, it’s someone who makes their employees feel secure, who draws staffers into a circle of trust. But creating trust and safety — especially in an uneven economy — means...

If you ask people whether they think stealing is wrong, most of them would answer yes. And yet, in 2013, organizations all over the world lost an estimated total of $3.7 trillion to fraud. Kelly Richmond Pope explains how the fraud...

John Gerzema says there's an upside to the recent financial crisis -- the opportunity for positive change. In this talk, he identifies four major cultural shifts driving new consumer behavior and shows how businesses are evolving to...

Halima Aden made history when she became the first hijab-wearing model on the cover of Vogue magazine. Now she returns to Kenya's Kakuma Refugee Camp -- where she was born and lived until the age of seven -- to share an inspiring message...

Just like his beloved grandfather, Avi Reichental is a maker of things. The difference is, now he can use 3D printers to make almost anything, out of almost any material. Reichental tours us through the possibilities of 3D printing, for...

Can we solve the problem of ocean plastic pollution and end extreme poverty at the same time? That's the ambitious goal of The Plastic Bank: a worldwide chain of stores where everything from school tuition to cooking fuel and more is...

For more than a decade, Opportunity has been one of our best tools for understanding Mars, but after eight months of listening and hoping, it was officially time to put the rover to bed.

Astronomers have found a couple galaxies that were much larger than expected, and the Opportunity rover might be in for some harsh Martian weather!

At Camp Diva, Angela Patton works to help young girls and their fathers stay connected and become part of each others' lives. But what about girls whose fathers can't be there -- because they're in jail? Patton tells the story of a very...

What do you think when you look at this speaker? Well, think again. (And then again.) In this funny, honest, empathetic talk, Yassmin Abdel-Magied challenges us to look beyond our initial perceptions, and to open doors to new ways of...

How can we fix water shortages? Well, we know that shortages are a problem and can cause fighting because water is a resource. When you limit a resource, things get scary. But, in this episode of Crash Course Kids, Sabrina talks about...

Exams can be terrifying. It's easy to feel like the weight of the world rests in these moments - like this one test determines your grades and, in turn, your whole future - even if you know, rationally, that this isn't really the case....

Jay Walker explains why two billion people around the world are trying to learn English. He shares photos and spine-tingling audio of Chinese students rehearsing English -- "the world's second language" -- by the thousands.

Meet some real-life robots, and find out what robots really are, and what they do for us every day!

Rajesh Rao is fascinated by "the mother of all crossword puzzles": how to decipher the 4000-year-old Indus script. He's enlisting modern computation to try to read this lost language, the key to understanding this ancient civilization.