Your thyroid is a tiny gland in your throat, and what it lacks in size, it makes up for in power. This thing controls your metabolism, so you literally can't have power without it. And unfortunately, there's a lot that can go wrong with...

The Stern-Gerlach Experiment in lauded in textbooks around the world for its contributions to the world of quantum physics. But for a few years, scientists unknowingly praised it for proving the wrong thing! Because instead of proving an...

Diamonds are cool, but they form really far below the Earth's crust, and the main way they get to the surface(ish) is through rock formations called kimberlites. And these kimberlites are really rare and really weird. So let's talk about...

The New Jersey earthquake of 2024 might have felt bigger than ones of the same magnitude on a Richter scale or intensity in California. That's because earthquakes in the eastern US go farther and hit harder than their western...

Hosted by: Savannah Geary (they/them)

If all goes well, we'll be sending astronauts back to the Moon in just a couple of years. And scientists have a lot to figure out before then, including the answer to a seemingly simple question: What time is it up there? Hosted by:...

Everyone knows where Punt is, right? The Ancient Egyptians sure did — they traded with them for millennia. But apparently they were *so* familiar with its location, they never bothered to write it down for posterity. So archaeologists...

If someone (say, a small child) asks you why the sky is blue, you might dive into an explanation of Rayleigh scattering. But if you want to give them a way cooler explanation, you can tell them it's because of bacteria. Hosted by: Stefan...

Adding sand to beaches sounds like it's an oxymoronic thing to do, but it's totally a thing. And there's some major benefits, like protecting our coastlines from storms and conserving ecosystems. But there are also some major drawbacks,...

Where is the closest black hole to Earth? Well, they're pretty hard to find, so the record-holder keeps getting updated. Currently, it's an unassuming black hole called Gaia BH1. But research has hinted at several black holes that might...

There's an oft-quoted statistic that something like 5% of people are related to Genghis Khan. And the guy did have a lot of kids. But the truth is more complicated. Here's how we use Y chromosome analysis and small groups of genetic...

NASA scientists are said to have invented a lot of household items over the decades. Some, like Velcro, or Tang, or the first cordless power tools, are misattributions. But other claims are totally legit. And you probably own at least...

Not long after the supernova of 1604, the telescope was invented. But astronomers would have to wait nearly FOUR CENTURIES to witness the next supernova that was visible to the naked eye. It was 1987, and a blue supergiant in the Large...

In the mid-2010s, researchers discovered something odd underneath Greenland - there was a giant hole under a glacier, and they had no idea what had caused it. More confusing still, other researchers were searching for the cause of a mini...

Naloxone, better known as Narcan, is today's gold standard to treat opioid overdose. But sometimes it comes up short against more potent opioids like fentanyl. So future treatments might take advantage of opioid receptor...

Six-foot millipedes? The biggest apes ever? And a kangaroo too big to hop? These are just a few of the biggest animals of their kinds to ever exist, and they're not just big, they're WEIRD. So let's talk about why Gigantopithecus went...

Some of your favorite mushroom recipes might use toxic ingredients! These are the top killers worldwide among fungi, from morels to webcaps. Hosted by: Hank Green (he/him)

Do humans have to die? What causes aging, and can we get around it? We'll talk about why we age and what kind of treatments can help us live longer. Hosted by: Niba @NotesbyNiba (she/her) Correction: Her last name is "Calment"

People have been making the connection between the moon's phases and the menstrual cycle for centuries. But when it comes to controlling periods, we may have been looking at the wrong thing in the sky. Hosted by: @NotesByNiba (she/her)

Everyone has that friend who loves records and insists that analog music is superior to digital. But is that true? Hosted by: Hank Green (he/him) Correction: Although this graphic can be found in many seemingly reputable sources, we've...

In this special episode, marine biologist Jaida Elcock (@sofishtication) joins Hank Green for a conversation all about fish! As our first SciShow Resident, Jaida spent the last 17 weeks writing and hosting a series of videos that will...

When it comes to major discoveries in paleontology, you usually picture a bunch of old professors in khaki digging in the desert. But when Ruby Reynolds discovered a truly groundbreaking ichthyosaur fossil that sheds light on what may be...

In the fight against diseases like cancers and blood disorders, sometimes we need to turn to unexpected allies. And in this case, one of those allies was a tiny little nanobody hiding inside of... camels. Hosted by: Savannah Geary...

mRNA vaccines stopped the COVID-19 pandemic in its tracks. Now, they're poised to help us against the flu, rabies, cancer, and more. Hosted by: Niba @NotesbyNiba (she/her)