Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In this special limited series, Emily Graslie and Trace Dominguez join me as we explore the universal rules of life that tie together Earth’s living...

Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In this special limited series, Emily Graslie and Trace Dominguez join me as we explore the universal rules of life that tie together Earth’s living...

The biggest thing that has ever lived on Earth… is a tree? Hard to believe, but it’s true. Travel with me to the Rocky Mountains of Colorado to go inside the most massive species on our planet, and learn what unique and special...

The monarch butterfly migration is one of nature’s greatest events. This orange-winged wonder travels up to 4,500 km from all over North America to spend the winter hanging from oyamel fir trees in central Mexico’s mountain forests. I...

Sharing the inside scoop on how the world's largest food company aims to reach net zero by 2050, Nestlé North America CEO Steve Presley joins TED's Lindsay Levin to discuss the progress they've made so far and where they're investing for...

Did you know that a massive ancient flood triggered a thousand year ice age? 13,000 years ago, North America seemed to be thawing from a 2.6 million-year ice age. Then, a huge swath of Earth was suddenly plunged back into the cold for...

Earthworms may be good for your garden, but they also have the potential to disrupt forest ecosystems across much of North America.

Both North and South America have their own species of marsupial, the opossum, but how they got so far away from their Australian relatives is a bit of a mystery.

Have you ever wondered how our earth was created? Here is a brief history about the Earth.

Mountains may look like they've all been stagnant for thousands of years, but the life cycle of a mountain is actually quite fascinating. From mountain ranges in space, to why Earth isn’t a water-world, here are some videos exploring the...

Looking at a map, you would never know that North America once almost ripped itself in half. But 1.1 billion years ago, it tried to - and had it succeeded, there would now be an ocean where Lake Superior is!

Two new studies challenge what we thought we knew about the first humans in the Americas. Could people have been on these continents 10 to 15 thousand years earlier than archaeologists previously thought? Join Stefan Chin and learn more...

This week, researches published a genetic analysis of the 11,500-year-old remains of a baby found in Alaska, near where the first Americans crossed the Bering land bridge. That analysis has answered some lingering questions about human...

Hank shares the latest developments in science, this week demystifying three freaky things in nature: the polar vortex, why some bugs are infertile, and how a chain can appear to defy gravity. You're welcome!

A new strain of bird flu has been detected in North American birds for the first time in seven years. And U.S. President Biden is temporarily lifting the country's summertime ban on E15 gasoline.

Squeaks and Mr. Brown saw some really cool birds while they were birdwatching at The Fort, so they’re revisiting old videos to remind themselves about a bunch of really cool birds!

Actor and activist Jane Fonda discusses her frontline work fighting for climate action, including recent efforts to support climate-minded candidates running for office in the US and to break the fossil fuel industry's stranglehold on...

We've been talking a lot about kings, and queens, and wars, and religious upheaval for most of this series, but let's take a moment to zoom out, and look at the ways that individuals' lives were changing in the time span we've covered so...

In which John teaches you about the Seven Years War, which may have lasted nine years. Or as many as 23. It was a very confusing was. The Seven Years War was a global war, fought on five continents, which is kind of a lot. John focuses...

For the next half of this series, we will be discussing Human Geography — so we’ll still be looking at the Earth, but specifically, how human activity affects and is influenced by the Earth. Naturally, we thought the best place to start...

European exploration had a lot of side effects. When the Old World and the New World began to interact, people, wealth, food, animals, and disease began to flow in both directions. In the New World, countless millions were killed by...

Hank shares the latest developments in science, this week demystifying three freaky things in nature: the polar vortex, why some bugs are infertile, and how a chain can appear to defy gravity. You're welcome!

Over the years, scientists have made a lot of predictions about how Earth's climate is changing, but they don't just pull those predictions from thin air.

A huge and diverse subfamily of dogs, the bone-crushers patrolled North America for more than thirty million years, before they disappeared in the not-too-distant past. So what happened to the biggest dogs that ever lived?