Where did life come from? It’s one of the biggest questions humans have ever asked — and the answer might be locked in ancient space rocks that were around before life began. To find out, NASA pulled off one of its most ambitious...

We know pollution is a problem on earth, but we’re filling space with our junk too. And if we don’t figure out a way to clean up space junk, we could end our interstellar dreams before they even get started. Today, we’re visiting some...

On April 8, 2024, the Moon’s shadow will fall on Earth, creating a total solar eclipse across North America, and if you have the chance to see it, you don’t want to miss it. It’s an amazing coincidence that total eclipses happen at all —...

Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb...

Predictive analytics uses math and historical data to make predictions about the future. It’s used in commerce, sports, politics, social media and tons of other places. And as it turns out, people have been using math to predict people’s...

Would it surprise you to learn that fish and birds count in pretty much the same way that we do? And that infants can do math? Our animal brains deal with quantities in very specific ways, from quick counts of a few dots to how we...

Why do the same, self-repeating patterns appear in trees, rivers, lightning, and even our bodies? Is there some essential, hidden rule of nature that makes these intricate designs appear all over the place? Let’s talk about fractals.

Have you ever looked at a cloud and seen a face? Or the front of a car and seen a face? Or an electrical outlet and seen a face? You definitely have. We all see faces everywhere we look thanks to a fun quirk of the human brain called...

Ever wonder why certain sounds make us cringe or even feel sick? Join Joe as he reacts to some of the most hated sounds, from nails on a chalkboard to the infamous "moist," and explores the science of why these sounds are so unbearable...

Political scientist Don Green joins Joe to figure out the complex psychological and social factors that motivate us to vote - or not to. They discuss how and why this decision making process may be in conflict with certain scientific...

Nature has had to come up with some crazy ways to survive harsh winters. But none are weirder than hibernation. Turns out there is more than one kind of hibernation, and studying all these ways that life slows down in the cold might help...

Camouflage is nature’s ultimate game of hide-and-seek, and the secret to winning this game is all in the brain. By studying the masters of disguise, we can see how they trick the brain to make themselves invisible — and what this can...

For centuries, diamonds were one of the most mysterious materials on Earth. They were beautiful, indestructible, and completely unexplained. Today, we’re exploring how scientists unlocked their secrets, and how one lab recreates the...

Our lizard friend the Gila monster probably has no idea that a chemical in its spit inspired one of the most important medical advancements of the 21st century. But this story is really about something bigger. Something deeper, beneath...

Did you know some people 'see' letters in color or 'taste' music? In this video, we’ll talk about synesthesia, how it works in the brain, and why some people experience these fascinating sensory connections while most of us don’t.

Plants eat sunlight and air to make life. But the key enzyme behind it all, called RuBisCO, isn’t actually all that great at its job. Let’s talk about how photosynthesis really works, why oxygen isn’t coming from where you think, and...

Across life on Earth, blood comes in red, blue, green, purple, even clear. But why? And what makes your blood different from mine? This video will teach you everything you need to know about the strange world of blood—what it does, why...

How did sauropods, uniquely large land animals, actually live, with their anatomy and physiology pushed to such extremes? Well, their unprecedented gigantism came with some equally massive costs…

In 1995, a few years after the collapse of the Soviet Union, a top-secret, first-of-its-kind US spy satellite program was declassified, leading to the unexpected story of how former enemies would become scientific allies, and technology...

Our appetite for meat is one of the greatest environmental challenges we face. Join me on a mind-blowing visit to UPSIDE Foods, the world's most advanced cultivated meat production facility, as we ask whether cultivated meat can deliver...

2023 was a wild year with everything from scorching temperatures to massive wildfires. Even with more renewable energy than ever, 2023’s climate data still seems really bad. So how should we think about climate change today? And what can...

We all know Charles Darwin's theory of evolution, right? Natural selection? But what about his lesser-know theory of evolution: sexual selection. Let’s talk about how animals like peacocks, whose eye-catching physical traits make them...

This is one of the weirdest mysteries of human evolution: Why do we have grandmas? From menopause to our slow maturation and super-long lifespans, humans are quite unique in the animal kingdom. Could grandma be an evolutionary secret...

How did dinosaurs become birds—and what good is half a wing? Join Joe and a few brave chickens as they recreate a brilliant experiment that helps solve one of evolution’s greatest mysteries: the origin of feathered flight.