We've all heard about microplastics, but where do they come from? And what can we do about ocean plastics? We'll follow a single water bottle on its journey to the Great Pacific Garbage Patch and beyond. Hosted by: Stefan Chin

Yellowstone National Park is one of the most famous tourist destinations and nature reserves in the world. And it's also the perfect place for.... geothermal power plants? Let's talk about the weird reason why NASA is all for building a...

No, technically Earth doesn't orbit the Sun. Yes, technically sound can travel through space. Over the years we've built up a lot of myths and misconceptions about astronomy. But of course some are more flat-out false than others. Hosted...

In 2021, researchers reported a shocking disappearance in the Bering Sea. Not of people, but of Alaskan snow crabs. And it's taken scientists years to understand how tens of billions of crabs disappeared all at once, so let's take you...

In the mid-1990s, a meteorite with the unmemorable name ALH84001 became the most famous rock in the world. Because one team of scientists proposed that it had the evidence of real, if microscopic, Martians. Hosted by: Reid Reimers (he/him)

In 1327, a monk named Richard of Wallingford drafted plans for an engineering marvel: one of the very first truly mechanical clocks in the world, which helped to usher in a complete reinvention of humanity's perception of time itself....

Ever wondered why nuclear power plant cooling towers or salt storage domes are the shape they are? SciShow has the answers! Hosted by: Niba @NotesbyNiba (she/her)

The most common substance in the world is literally IN the world. It's a mineral called bridgmanite, and it belongs to a class of minerals (called perovskites) that scientists are trying to use in the next generation of solar panels....

Back in the Victorian Era, Englanders thought that the famous Roman Baths were so healing because there was radium in the water. And there was, but that wasn't the real secret. Turns out that the baths are teeming with microbes that...

Polymetallic nodules, found at the bottom of the Pacific Ocean's Clarion-Clipperton Zone, have enough metals to secure the future of green energy. But is it worth the cost? Hosted by: Savannah Geary (they/them)

You've probably heard that climate change is leading to rising sea levels, which is bad news for lots of islands. But for some islands like the Maldives, rising waters are making them... bigger? Correction: We mixed up east and west!...

"Water, water, every where"...or so that one poem goes. And it's kinda right, because there's way more water INSIDE the Earth than on the surface. But scientists still don't know with certainty exactly how Earth got all of that H2O....

Coral reefs are fighting for their very survival these days, and scientists are looking for ways to help—including testing underwater AC systems, and 3D printing what one might describe as artificial coral cyborgs. Hosted by: Savannah...

From the Great Pyramid at Giza, to one-quarter of the Netherlands, to continent-spanning electrical grids, humans are great at making really BIG things. Hosted by: @NotesByNiba (she/her)

Dams are great for humans, providing hydroelectricity and flood control. They're also horrible for the rivers they block. Here are three success stories of ecosystems that bounced back after a dam was removed. Hosted by: Savannah Geary...

One of game theory's most famous quandaries is the Tragedy of the Commons. But, through her years of research, Nobel Prize winner, Elinor Ostrom, showed us that we're not doomed to tragedy after all. Hosted by: Stefan Chin (he/him)

China's Zhangye Danxia National Geopark is home to strikingly beautiful rainbow mountains -- yes, what you're seeing is real! But the secret to this amazing sight might be something incredibly humble: dirt. Hosted by: Stefan Chin (he/him)

This lake in Canada sports a stunning summer look - spots! And the weird geology and hydrology that makes these spots is definitely worth talking about. Plus, Spotted Lake may not be the only one of its kind, and might tell us more about...

The Chocolate Hills of Bohol, Philippines are so perfectly shaped that local legends say they were crafted by giants. Geologists can't agree exactly what happened, but the answer might be as simple as limestone, water, and wind. Hosted...

It's one of the great boomer vs. millennial debates: Do you have to sort your laundry? It's tedious to pull apart lights and darks, hot water and cold water, but thanks to advancements in science, that all may be a thing of the past....

Whether someone's running for President or to be on their school board, there's a lot that a politician has to do to try to sway voters. But did you know that what name they use is on that list? Research shows that whether you choose...

When the Bald Eagle population started to decline in the mid-20th century, scientists began to ask why. Population ecology, the study of organisms of the same species, played a big role in answering that question. In this episode of...

How can you tell two species apart? It’s not always simple. In this episode of Crash Course Biology, we’ll learn about speciation—a process that can happen over millions of years, or within a single generation. Along the way, we’ll...

There are lots of ways that evolution happens, and natural selection is just one of them. In this episode of Crash Course Biology, we’ll find out how this process works and shapes traits in all living things —from ginkgo trees to howler...