When you think "sand dunes" you probably wouldn't think to look up in the northern reaches of Canada, but there lies one of earth's most unique habitats.

We’ve visited lots of places in our solar system in the last 60 years, but modern technology has made an unlikely candidate the hottest new frontier of solar system exploration: asteroids. Today, we’ll take a look at a few exciting...

There's a creeping sameness in many of our newest urban buildings and streetscapes, says architect Vishaan Chakrabarti. And this physical homogeneity -- the result of regulations, mass production, safety issues and cost considerations,...

400 years after Hudson found New York harbor, Eric Sanderson shares how he made a 3D map of Mannahatta's fascinating pre-city ecology of hills, rivers, wildlife -- accurate down to the block -- when Times Square was a wetland and you...

By 2100, the UN estimates that the world's population will grow to just over 11 billion people. Architect Vishaan Chakrabarti wants us to start thinking about how we'll house all these people -- and how new construction can fight climate...

This week Craig is going to give you a broad overview of elections in the United States. So as you may have noticed, there are kind of a lot of people in the U.S, and holding individual issues up to a public vote doesn't seem...

What if everything in your life was randomized: from the food you ate to the things you did and the places you traveled? Computer scientist Max Hawkins created algorithms to make decisions like these for him -- and got hooked on the...

Want a Pineapple? If you want a pineapple, it's possible you can just run down to the store and get one. But, if you wanted to grow one, that's a lot more difficult depending on where you live. In this episode of Crash Course Kids,...

After decades of research and billions spent in clinical trials, we still have a problem with cancer drug delivery, says biomedical engineer Elizabeth Wayne. Chemotherapy kills cancer -- but it kills the rest of your body, too. Instead...

Democracy needs an update -- one that respects and engages citizens by involving them in everyday political decisions, says writer and researcher Max Rashbrooke. He outlines three global success stories that could help move democratic...

Life on Earth requires three things: liquid water, a source of energy within a habitable range from the sun and organic carbon-based material. But life is surprisingly resilient, and organisms called extremophiles can be found in hostile...

About the importance of the National Parks Foundation.

So you know about Freshwater and Saltwater now and you know that there's not that much Freshwater for us (and other life) to get to. So how do different animals deal with different amounts of water where they live? In this episode of...

Our diets are more global than we realize, because our common food crops and animals were domesticated far away in diverse locations.

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Day by day, country by country, we tend to measure seasons differently.

What's black and white, big and fuzzy, and likes to eat bamboo all day? A panda! Join us to learn all about this rare bears and the challenges they face as their habitat disappears.

You wanna be the very best? Like no one ever was? Travel across your neighborhood with us and learn about some of the tech behind the phenomenon that is Pokémon GO.

The water on Mars probably doesn't have much oxygen, but new models show that life doesn't need as much O2 as we thought. And NASA is sending a claw machine to the red planet!

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. In an engaging and personal talk -- with cameo appearances from his grandmother and Rosa Parks -- human rights...

What have we learned from exploring Earth's harshest locations? That pretty everywhere we look for life, we find it. From smoking hot hydrothermal vents to icy deserts, up in clouds and inside rocks, extremophiles have found a way to...

Meet some of the world’s tiniest animals -- micro-animals, that can live at the bottom of the ocean, on our skin, even in space!

Ocean plastic pollution is a massive environmental problem. Millions of tons of plastic waste enter the ocean every year, even plastic that goes in the trash can often ends up in the sea! This week we learn about the Great Pacific...

Ever wonder what all those names on the periodic table actually mean? There's a whole lot of fascinating history on Mendeleev's table. Some carry names from antiquity, some are named for people, some are named for places, and some are...

Scientists believe that your taste receptors are meant for taste, but how do they explain the taste receptors on your lungs?