To see is to believe, says Oren Yakobovich — which is why he helps everyday people use hidden cameras to film dangerous situations of violence, political fraud and abuse. His organization, Videre, uncovers, verifies and publicizes...

When a squirrel chewed through a cable and knocked him offline, journalist Andrew Blum started wondering what the Internet was really made of. So he set out to go see it -- the underwater cables, secret switches and other physical bits...

What would a city designed for the blind be like? Chris Downey is an architect who went suddenly blind in 2008; he contrasts life in his beloved San Francisco before and after -- and shows how the thoughtful designs that enhance his life...

More than 8 million people are crowded together to live in New York City. What makes it possible? In part, it’s the city’s great public spaces — from tiny pocket parks to long waterfront promenades — where people can stroll and play....

For centuries, people have viewed swamps and wetlands as obstacles to avoid. But for photographer Mac Stone, who documents the stories of wildlife in Florida's Everglades, the swamp isn't a hindrance — it's a national treasure. Through...

Did you know that your blood type affects more than just who you can donate blood to?

Hank gives us a summary of the important facts about fracking: what it is, why we do it, and how it actually isn't all butterflies and cupcakes.

Bill Stone, a maverick cave explorer who has plumbed Earth's deepest abysses, discusses his efforts to mine lunar ice for space fuel and to build an autonomous robot for studying Jupiter's moon Europa.

In the center of Caracas, Venezuela, stands the 45-story "Tower of David," an unfinished, abandoned skyscraper. But about eight years ago, people started moving in. Photographer Iwan Baan shows how people build homes in unlikely places,...

Today, in our final episode of Crash Course AI, we're going to look towards the future. We've spent much of this series explaining how and why we don't have the Artificial General Intelligence (or AGI) that we see in the movies like...

Can we rebuild our broken suburbs? Ellen Dunham-Jones shares a vision of dying malls rehabilitated, dead "big box" stores re-inhabited, and endless parking lots transformed into thriving wetlands.

There are some places on our planet that seem pretty ordinary, they’re just… weirdly small. Like, a miniature desert, or a teensy volcano. But when you look a little closer, there’s a lot more to these tiny geological misfits than meets...

Physicists are used to the idea that subatomic particles behave according to the bizarre rules of quantum mechanics, completely different to human-scale objects. In a breakthrough experiment, Aaron O'Connell has blurred that distinction...

Bitcoin and other blockchain technologies, like NFTs, work a lot like reindeer mating.

Have you ever wanted to know what it would be like to have an army of hopping robots? NASA might bring that dream to life as we explore our solar system.

To address the problem of counterfeit goods, African entrepreneurs like Bright Simons have come up with innovative and effective ways to confirm products are genuine. Now he asks: Why aren't these solutions everywhere? From...

There's an Eclipse coming on August 21st, and Jessi and Squeaks are PUMPED! Today, they'll show you where in the world you'll be able to see the eclipse, what happens during an eclipse, and tell you how you can watch the eclipse safely!

We've been trying to understand Mars for years, but some scientists think that ancient craters on earth might hold some answers to our red neighbor's history.

No business, no matter how innovative and amazing it is, will survive if people haven’t heard of it. If people don’t know something exists, they’ll never be able to purchase it. It’s time to work on our communication skills.

How can we tap into the potential of all students, especially those who come from disadvantaged backgrounds? Sociologist Anindya Kundu invites us to take a deeper look at the personal, social and institutional challenges that keep...

Scientists conduct some pretty cool research experiments for Mars here on Earth. These terrestrial analogues have revealed some incredible discoveries!

We've learned a lot about Mars over the years, but we keep uncovering new mysteries - important, fundamental aspects of The Red Planet that we just can't explain. Here are three of them.

In the history of our species, we still don’t know exactly how and when early humans migrated across the world, but some ancient footprints might be helping us figure it out.

Victor Vescovo is leading the first-ever manned expedition to the deepest point of each of the world's five oceans. In conversation with TED science curator David Biello, Vescovo discusses the technology that's powering the explorations...