Overheard Season 3

For centuries, the Northwest Passage, the long-sought sea route connecting the Atlantic and Pacific Oceans through northern Canada, was a holy grail of Arctic exploration. Even now, sailing through it isn’t guaranteed. Mark Synnott, a National Geographic Explorer, writer, and adv ...  Show more

There’s a lost continent waiting to be explored, and it’s right below our feet. We’ll dig into the deep human relationship to the underground—and why we understand it from an instinctive point of view, but not so much from a physical one. (Hint: We’re afraid of the dark.) In an e ...  Show more

This season's going to be a little different...we're headed to our national parks. We've got eight special episodes recorded on location in America’s national parks: stories about their biodiversity, their complex histories, and how they are protecting nature. We'll explore all s ...  Show more

Just looking at a world map makes it clear that today's continents were once a single mass, but scientists are still researching how they came together and apart. Learn about the history of the Southern Hemisphere's continents in this episode of BrainStuff. Learn more about your ...  Show more

Earth’s history is marked with the rise and fall of many great civilizations, all of whom had their own ways of living and thoughts on dying. Today we travel to South America to learn about the ancient Inca Capacocha ritual, uncover what lies within the world’s highest tombs, and ...  Show more

The universe is billions of years old.  If, in the future, humanity were to explore the galaxy and visit other planets around other stars, we might be visiting places where at one time, an advanced civilization once existed.  However, if such a civilization existed, it might have ...  Show more