Neuroscientist and inventor Christopher deCharms demonstrates a new way to use fMRI to show brain activity -- thoughts, emotions, pain -- while it is happening. In other words, you can actually see how you feel.

Hank describes some of the best explanations that neurologists have come up with to account for the strange sensation we know as déjà vu.

Adults tend to think of kids as "future citizens" -- their ideas and opinions will matter someday, just not today. But kids make up a quarter of the population, so shouldn't they have a say in what the world they'll inherit will look...

District lines, and the groups of voters within them, may seem arbitrary, but a lot of thought (and political bickering) is put into these carefully drawn lines. From "packing" a district to "cracking" a district--learn how the shape of...

Along with a crew of technologists and scientists, Jorge Soto is developing a simple, noninvasive, open-source test that looks for early signs of multiple forms of cancer. Onstage at TEDGlobal 2014, he demonstrates a working prototype of...

Ten years ago, researchers thought that getting a computer to tell the difference between a cat and a dog would be almost impossible. Today, computer vision systems do it with greater than 99 percent accuracy. How? Joseph Redmon works on...

ESA's newest printer at the DLR German Aerospace Center in Cologne,

The workplace is often presented as a meritocracy, where you can succeed by putting your head down and working hard. Wall Street veteran Carla Harris learned early in her career that this a myth. The key to actually getting ahead? Get a...

Oxygen forms about 21% of the air around us. In your body, oxygen forms a vital role in the production of energy in most cells. But if gases can only efficiently diffuse across tiny distances, how does oxygen reach the cells deep inside...

All living things are made of cells. In the human body, these highly efficient units are protected by layer upon layer of defense against icky invaders like the cold virus. Shannon Stiles takes a journey into the cell, introducing the...

Today humanity produces more than 1,400 tons of carbon every minute. To combat climate change, we need to reduce fossil fuel emissions, and draw down excess CO2 to restore the balance of greenhouse gases. Like all plants, trees consume...

Is your school or workplace divided between the "creatives" versus the practical people? Yet surely, David Kelley suggests, creativity is not the domain of only a chosen few. Telling stories from his legendary design career and his own...

Gravity may be doing a lot more than just keeping us planted on the Earth. Scientists are learning that it’s also a key player in how we perceive things.

Many of us choose to enjoy the effects of alcohol, and we know that drinking too much is a bad thing, but what kinds of things can actually happen when you drink too much for too long?

Digital public servant Amanda Renteria has seen that the millions of people who rely on government welfare services are often discouraged from seeking them out, frustrated by long lines and unnecessarily complicated processes. At Code...

Neuroscience is abound with debates over the nature of consciousness. Which makes sense, because it’s a very abstract idea. We know we are conscious, but theories of why, how and what brain activity causes it are still simply that:...

Last week we introduced the idea of socialization and today we’re talking a little more about how it works, including an introduction to five main types of socialization. We’ll explore anticipatory socialization from your family, the...

Chinese alchemists searching for an elixir of eternal life discovered the world's first chemical explosive. Hank has the full story on gunpowder in this SciShow about a big idea of science.

What does it look like inside the mind of a machine? Inspired by the architectural vision of a futuristic Los Angeles in "Blade Runner," media artist Refik Anadol melds art with artificial intelligence in his studio's collaborations with...

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...

The group of bacteria known as Chlamydiae doesn't do much to endear itself to us since these bacteria can cause a variety of illnesses. But it turns out that we may have Chlamydiae to thank for life as we know it!

Erik Johansson creates realistic photos of impossible scenes -- capturing ideas, not moments. In this witty how-to, the Photoshop wizard describes the principles he uses to make these fantastical scenarios come to life, while keeping...

For nearly half a century, scientists have been trying to create a process for transplanting animal organs into humans, a theoretical dream that could help the hundreds of thousands of people in need of a lifesaving transplant. But the...

So now that we’ve built and programmed our very own CPU, we’re going to take a step back and look at how CPU speeds have rapidly increased from just a few cycles per second to gigahertz! Some of that improvement, of course, has come from...