Is Earth’s core a solid or a liquid? Yes. The mysteries of our own planet’s interior have, in many ways, been harder to crack than those of the rest of the cosmos.

The tepuis of Venezuela, Brazil and Guyana are billion-year-old "islands in the sky", each one carrying an ecosystem unique to their summit. In this video we discuss, the geography, geology, ecosystems and the human connection of these unique and beautif...

The Cascadia Subduction Zone represents a profound disaster in the making. Running hundreds of miles along the Pacific Northwest coast, it's overdue for a catastrophic magnitude 9 earthquake. In fact, scientists estimate there's a 37% chance it will strik...

The single longest linear feature on Earth--the "Ring of Fire" circles almost the entire Pacific. It is a ring of active volcanoes from White Island just north of New Zealand.

Explore the science of life’s origins, from prebiotic chemistry to the first cells in Earth’s primordial oceans.

66 million years ago a giant space rock crashed into our planet and killed the dinosaurs. In the span of just four decades, we’ve gone from not knowing there was a space rock at all to knowing exactly where that planet-killer came from.

Explore Oceania, a vast region of the Pacific Ocean known for its stunning islands, diverse cultures, and breathtaking natural beauty.

It is the largest and most fearsome volcanic island on the planet. We'll scour the island for clues, to address the mystery of what powerful forces are ripping Iceland apart and lighting its fiery volcanoes.

Antarctica today is ice on ice on ice, with a few penguins sprinkled in. But once upon a time, not only was there no ice or snow, yet palm trees, giant crocodiles, noodle mammals and... dinosaurs?

Turns out that Florida man wasn't always Florida man.

Dig into how the Sun and Moon are responsible for the tides on Earth, and what this force looks like on other celestial bodies.

Planet Earth is the jewel of the solar system—the shimmery blue oceans, the verdant green forests, the wispy whimsical cloud formations.

Scientists have been trying to solve the mystery of why plate tectonics works the way it does for over a hundred years. And they might have just uncovered a key to cracking it.

Long ago, the Earth's seven continents were assembled in a giant, sprawling supercontinent known as Pangea. You may've heard of it, but what is often less talked about is what came before Pangea.

What if there was no one left, no one left but you? Could you survive knowing you were the last living human on Earth?