You've probably heard of acid rain: rain that's more acidic than normal because of pollution in the atmosphere. But, if rain can become more acidic, shouldn't it also be able to become more basic?

In which Hank details the five scariest things that will likely happen because of climate change.

Have you ever moved? Some animals move too! And if an animal moves from one place to another for weather or food, it's called migration!

De-extinction, or using the power of modern biotechnology to bring back extinct species like mammoths and dinosaurs, would be cool. But is it really as easy as the movies make it look? Or do the cruel hands of time make it impossible?...

Many people in the United States and Latin America have grown up celebrating the anniversary of Christopher Columbus's voyage. But was he an intrepid explorer who brought two worlds together or a ruthless exploiter who brought...

It's raining where Jessi and Squeaks live, so they decided to bust out some books and read up on a special kind of forest where it rains almost every day!

You might guess that big city subways would be filled with all sorts of nasty pathogens just waiting to infect the nearest unsuspecting human, but science doesn’t back this up at all.

We've talked about some of the ways microgravity can negatively affect humans, but for bacteria, being in space might be quite beneficial!

We’ve changed - and standardized - the way diseases get named because the old way was often stigmatizing and confusing.

What do gray wolves, elephants, and parrotfish have in common? They're all keystone species, which means they have an especially large impact on their habitat. SciShow explores how these animals keep their ecosystems running.

Soccer is the only thing on this planet that we can all agree to do together, says theater maker and TED Fellow Marc Bamuthi Joseph. Through his performances and an engagement initiative called "Moving and Passing," Joseph combines...

Astronomers have announced the Juno space probe’s first findings from Jupiter!

Some trees lose their leaves in the fall, but some keep their green leaves all year round. Join Jessi and Squeaks to learn about evergreens: where they grow, and how they survive in harsh conditions!

Thanks to The National Trust for Historic Preservation, in partnership with American Express, for sponsoring this video celebrating 100 years of the National Park Service! Now through July 5th, you can help your favorite park win an...

In our louder and louder world, says sound expert Julian Treasure, "We are losing our listening." In this short, fascinating talk, Treasure shares five ways to re-tune your ears for conscious listening -- to other people and the world...

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

Take a deep breath. In a single intake of air, your lungs swell with roughly 25 sextillion molecules, ranging from days-old compounds, to those formed billions of years in the past. In fact, many of the molecules you're breathing were...

So, what is geography? In our first episode of Crash Course Geography, we will endeavor to answer this seemingly simple question with the help of a similarly simple factoid: that the US imports more than 3 billion pounds of bananas from...

Hank talks about the last major way humans are impacting the environment in this penultimate episode of Crash Course Ecology. Pollution takes many forms - from the simplest piece of litter to the more complex endocrine distruptors - and...

How can you study Mars without a spaceship? Head to the most Martian place on Earth -- the Atacama Desert in Chile. Astrobiologist Armando Azua-Bustos grew up in this vast, arid landscape and now studies the rare life forms that have...

Stellar astronomer and TED Senior Fellow Lucianne Walkowicz works on NASA's Kepler mission, searching for places in the universe that could support life. So it's worth a listen when she asks us to think carefully about Mars. In this...

Bees, wild and domesticated, are in big trouble. Bee colonies are dying off at alarming rates, and the cause isn't clear. Pesticides, habitat loss, disease, there's a laundry list of likely culprits. We rely on these tiny pollinators for...

A Simple Proof of Conservation of Energy

New ReviewWe take a look at England, with our presenter Kat. Learn about places to visit, important cities, mountains and rivers, common languages, hear the story of Saint George and more!