Jessi and Sam learn about sedimentary rocks and show how you can use vinegar to identify a piece of limestone.

Squeaks is heading on a trip around the world! He's going to hear so many cool sounds, and wants Jessi to experience them, too. In this episode, he learns about how humans (and a couple of other animal guests) hear.

In this video Paul Andersen shows you how to construct explanations in a mini-lesson on evidence-based reasoning. Two examples are included in the video and two additional examples are included in the linked thinking slides. <br/>

Clean energy visionary Lei Zhang loves the Gobi Desert — the most Mars-like place on Earth. Why? Because of the promise it holds to provide the free, abundant solar and wind energy to fuel humanity’s next leap forward. Sharing the story...

There's a complex, mysterious current running throughout the Atlantic Ocean, and it's in trouble. But to help save it, researchers need to understand it, and finding ways to study it has been a challenge. But it turns out that the...

Today, a lot of us walk about in leather, cotton, or other boring fabrics. But researchers are working to make the future way cooler, with flame retardant seaweed fabrics, self-healing sea silk, and polar bear inspired de-icing...

India's Roopkund Lake, also known as Skeleton Lake, is the site of gruesome sculptures of human bones. Many causes of these deaths have been proposed, from hail to divine intervention. But scientists now think that whatever happened,...

Silfra Fissue in Iceland is a remarkable place where the Earth is tearing itself apart. Here, intrepid divers can reach out and touch two continents at once. But... should they?<b<br/>r/>

Hosted by: Reid Reimers (he/him)

There are a lot of great debates in science, and a major one is when exactly humans reached the Americas. There's contentious footprints and wishy-washy stone tools, all of which has spurred some heated academic arguments. But the most...

Does eating soy make you more feminine? Is sunscreen actually bad for you? (No.) Here are five bad takes about human health, and the real truth behind them.<b<br/>r/>

Hosted by: Stefan Chin (he/him)

Reforesting unneeded farmland could be a huge key for getting the climate crisis under control. Which is why Pat Brown, creator of the Impossible Burger, is trying to figure out the best way to do it.



Hosted by: Stefan Chin...

Today, the Great Salt Lake of Utah has multiples of the ocean's salt concentration. But it didn't used to be so salty. In fact, it used to be Lake Bonneville. And we know its story thanks to microscopic diatoms and Dr. Ruth...

We've been using lab rats for over a hundred years, and they've been part of some of the biggest medical breakthroughs ever. But what comes next? From organs on a chip to computer simulations, here are some of the ways that science...

In order to study the smallest particles in the known universe, physicists have to build incredibly huge detectors. One of them, currently under construction, stretches across the Mediterranean from France to Greece. And despite being...

It's a hard world out there, especially for a little guy. So what's a soft-bodied animal to do? Turns out that marine invertebrates basically figured out the best defense system of all time, and nobody's a better demonstration of that...

So you've probably heard by now that a biotech company called Colossal Biosciences has brought dire wolves back form extinction. Or at least.... they SAY they did. We wanted to break down all the science in their claims, and get to the...

Are you an insect fetus who'd rather not get eaten by your siblings? How about a baby frog who'd rather not drown before getting to leave your egg? Well, you had better figure out a way to hatch when you need to.



Hosted by:...

The number of people with Parkinson's Disease has doubled in just 25 years, but its rise has been much worse in some places than in others. <b<br/>r/>

Hosted by: Stefan Chin (he/him)

Today we're talking about the biggest snakes that ever lived -- like anacondas, pythons, and Titanoboa -- and how they evolved to be so big in the first place.<b<br/>r/>

Hosted by: Savannah Geary (they/them)

A huge number of vehicular fatalities are people who aren't in cars at all. Pedestrians are dying more than they used to and more in America than other comparable parts of the world. Here's why.



Hosted by: Savannah Geary...

Correction: This episode has some mistakes in our on-screen credits. The Writer is Tom Rivlin, the script Script Editor is JD Voyek, and the Fact Checker is Angela Reed.



Have you ever listened to someone speaking a foreign...

In a nuclear explosion, how close you are impacts your chance of survival. But who you are also has more influence than you might think. If everyone on Earth were equidistant from the bomb, here's the last person...

Pamukkale, Turkey's Cotton Palace, is home to some of the most beautiful hot springs in the world. Located in the Denizli Basin, it's not only unique, but can tell us a surprising amount about the history of the site.



Hosted...

Antarctica probably isn't the first place you think of when you hear about volcanoes. But there's a lot happening under the icy tundra, and not all of it's a good thing. Here's how rising temperatures could lead to an even more...