Internet filmmaker Baron Ryan talks to himself, but he doesn't always like what he has to say. In a funny, existential play (where Ryan plays both himself and his mind), he contemplates the paradox of being a people pleaser, the efficacy...

For years, Jean Béliveau walked from country to country, with the goal of circumnavigating the globe on foot. While few people have the time or desire to walk such extreme lengths, research shows that adding even a modest amount of...

The sprawling metropolis of Phoenix seems an unlikely place to build an apartment complex without parking for residents. Car dependency is just part of life for most people there. But a new development in the suburb of Tempe is providing...

Amir Nizar Zuabi and Kristine McDivitt Tompkins discuss the power of art and conservation in addressing global challenges. Zuabi reflects on his projects, including the moving puppet Amal and "The Herds," which use beauty and...

Is embracing your inner teenager the key to thriving in adulthood? Neuroscientist Adriana Galván shares three powerful lessons from decades of research into adolescent brain development, exploring what teens can teach us about embracing...

TOP 10 REASONS Why We Know the Earth is Round

What is a sport? Do arbitrary and technophobic rules matter?

Biomedical researcher Sonia Vallabh's life was turned upside down when she learned she had the genetic mutation for a rare and fatal illness, prion disease, that could strike at any time. Thirteen years later, her search for a cure has...

In a part of the United States with more than 17,000 years of human history, cultural preservation advocate Tracie Revis is working to turn the Ocmulgee Mounds into Georgia's first national park and preserve. This park would be...

Have you ever thought about why we humans have noses that stick out? Turns out, there's been a big story about human evolution right... under your nose.

Did you know the world's largest tropical forest is partly formed by seeds emerging from poop? Ecologist Ludmila Rattis reveals the surprisingly fruitful benefits of letting nature take care of its own business, sharing how the digestive...

Theater has the power to transform the most pressing issues of our time from news stories into human stories, says director and playwright Amir Nizar Zuabi. Recounting his work on the journey of Little Amal — a 13-foot puppet symbolizing...

Many of the greatest biological dispersal events in history likely happened because animals inadvertently traveled across the oceans on floating debris.

In this episode, Jessi and her friends at The Fort learn about the physics behind all the slippery fun you can have on the ice. <br/>

In this SciShow Kids compilation, Jessi and Squeaks have a wonderful winter time learning the science of ice skating, why peppermint tastes so chilly, and how to build a gingerbread Fort!

We underestimate the power of our own generous actions, says Asha Curran, CEO of the global generosity movement GivingTuesday. Sharing stories of people making a difference through simple acts of kindness, she shows how generosity, even...

A decades-long Harvard study has concluded that good relationships and close friendships are the key to lifelong health and happiness. Ali Rogin speaks with Dr. Robert Waldinger, a clinical professor of psychiatry at Harvard Medical...

If the sun instantly switched off like a light bulb–which can’t happen, by the way–then we wouldn’t know for almost 8 and a half minutes. Light travels at the fastest speed there is, but it still takes almost 500 seconds to get to Earth....

One Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in one minute!

There’s been some big news in neuron science this week as individuals suffering paralysis regain mobility and music might have a secret that gets us to dance.

Dinosaurs were huge—it's common knowledge. So why aren't modern mammals anywhere near that size? In this episode of SciShow, Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size...

Jessi and Squeaks learn all about pine cones and their seeds today! Did you know that pine cones can open and close to help protect their seeds?

There's all sorts of life in the Redwood forest, but not just in the ground, different animals live in all layers of the Redwoods!

Michael Pollan's bestselling book "In Defense of Food" was a call to arms for making real food a bigger part of Americans' diets. Now he takes that push to PBS with a new documentary. He joins Jeffrey Brown to discuss why we’ve lost the...