Paralyzed by a stroke, Henry Evans uses a telepresence robot to take the stage and show how new robotics, tweaked and personalized by a group called Robots for Humanity, help him live his life to the full. He shows off a nimble little...

Taking photos used to require technical knowledge and time in a lab, but now we have electronic devices in our pockets that do all of the work for us. How do these miracle devices do it?

Mohamad Jebara loves mathematics -- but he's concerned that too many students grow up thinking that this beautiful, rewarding subject is difficult and boring. His company is experimenting with a bold idea: paying students for completing...

If you study a map of the Cosmic Microwave Background, or CMB, you may notice a large, deep blue splotch on the lower right. This area, creatively named the Cold Spot. Is this feature a statistical fluke, the signature of vast...

Snow Dragon. Pure Imagination. Frozen Minotaur. These are the names Eddy Cartaya and his climbing partner Brent McGregor gave three glacier caves that they were the first to explore. As the Sandy Glacier slowly slides down Mount Hood in...

From mourning orcas to distressed elephants, biological anthropologist Barbara J. King has witnessed grief and love across the animal kingdom. In this eye-opening talk, she explains the evidence behind her belief that many animals...

Stories are necessary, but they're not as magical as they seem, says writer Sisonke Msimang. In this funny and thoughtful talk, Msimang questions our emphasis on storytelling and spotlights the decline of facts. During a critical time...

Plutonium powered robot car! With a laser gun! That's (kind of) what's hurtling through space right now as part of NASA Mars Science Laboratory heads for the Red Planet. Hank walks you through this historic mission, with the help of some...

We check our phones upwards of 50 times per day -- but when our kids play around with them, we get nervous. Are screens ruining childhood? Not according to children's media expert Sara DeWitt. In a talk that may make you feel a bit less...

Sue Desmond-Hellmann is using precision public health -- an approach that incorporates big data, consumer monitoring, gene sequencing and other innovative tools -- to solve the world's most difficult medical problems. It's already helped...

How comfortable are you with robots taking over your life? Covering a wide range of potential applications -- from the mundane (robot house cleaner) to the mischievous (robot sex partner) to the downright macabre (uploading your brain to...

Filmmaker Deborah Scranton talks about and shows clips from her documentary The War Tapes, which puts cameras in the hands of soldiers fighting in Iraq.

A puppy's tail wagging on the left side of their body might mean something profoundly different than wagging on the right side.

Jessi and Squeaks are getting ready to go on a big trip to a different state... but that mean they're going to have to leave the Fort for a long time! Join them one last time and learn why it can be so sad to say goodbye, and why it can...

Hank fills us in on the four exploratory missions to space that he is most excited about - New Horizons is going to Pluto and the Kuiper belt; Juno is on it's way to Jupiter; Dawn is exploring two large asteroids; Rosetta will land on a...

If you look closely enough, you'll see the night sky is actually a little green. SciShow Space explains the science behind the phenomenon known as airglow.

SciShow tackles a Quick Question with a longish answer: What causes auroras? TL;DR: It's a breathtaking display of particle physics in action.

What if you could control digital devices using just the power of thought? That's the incredible promise behind the Stentrode -- an implantable brain-computer interface that collects and wirelessly transmits information directly from the...

Flight is about to get a lot more personal, says aviation entrepreneur Rodin Lyasoff. In this visionary talk, he imagines a new golden age of air travel in which small, autonomous air taxis allow us to bypass traffic jams and...

3D animation can bring scientific hypotheses to life. Molecular biologist (and TED Fellow) Janet Iwasa introduces a new open-source animation software designed just for scientists.

Authentic dollar bills are equipped with many security features to make them difficult to forge. But that doesn't stop counterfeiters from trying to fool people with fakes. Luckily, anyone can help catch a counterfeit; all you need are a...

Kevin Surace suggests we rethink basic construction materials -- such as the familiar wallboard -- to reduce the huge carbon footprint generated by the manufacturing and construction of our buildings. He introduces EcoRock, a clean,...

High school science teacher Tyler DeWitt was ecstatic about his new lesson plan on bacteria (how cool!) -- and devastated when his students hated it. The problem was the textbook: it was impossible to understand. He delivers a rousing...

Designer Tea uglow is creating a future in which humanity's love for natural solutions and simple tools can coexist with our need for information and the devices that provide us with it. "Reality is richer than screens," she says. "We...