Humans may think we have the market cornered on bizarre sexual acts, but the animal kingdom has come up with some mating rituals that put us to shame. <b<br/>r/>

Hosted by: Hank Green

Do you taste something bitter when you hear the right word? Maybe you see a flash of a certain color instead. If so, you might have synesthesia. But it turns out, we're ALL capable of having different senses interact with one another...

Let's say goodbye to 2024 by highlighting some amazing space images that were released this year. They aren't just pretty — astronomers can actually study them to learn more about the universe!



Hosted by: Niba Audrey...

From a fancy-frilled ceratopsian to a possible new biggest snake ever and something called a giga goose, there were some pretty amazing giant fossils announced in 2024. Plus, Kallie from our sister channel Eons reminds us to give some...

The deepest hole we've ever been able to dig is just 0.2 percent of the way to the center of the Earth. What would we encounter if we could drill all the way?



Correction: We mislabeled these! These are ammonite fossils, not...

When it comes to things that affect sperm counts, there's a lot of rumors out there. Anything from diet and exercise to choice in underwear and even how you sit are all debated as possible behaviors that can cause an individual to...

A decade after Vantablack took the internet by storm, where are we in terms of the blackest black? It turns out Vantablack doesn't hold the record, anymore. So what have scientists done differently?



Hosted by: Savannah Geary...

The Vikings were renowned navigators at a time before magnetic compasses were invented. So how'd they manage it? Their secret may have been these pretty-pointed crystals of calcite called Iceland spar, and this month's SciShow Rocks...

Whether you're an amateur sommelier or just a fan of the occasional glass, if you drink wine, you've heard of rules on how to pair it with food. But how many of those actually hold up? Let's get into the details of the best ways to...

Astronomers have two main ways to calculate how fast the universe is expanding. Unfortunately, they don't agree with one another. The JWST was supposed to help solve this discrepancy, known as "The Hubble Tension" or "The Crisis in...

There's a rare material called Darwin Glass that Tasmanian Aboriginals have prized for centuries. And while it took Western researchers a while to figure out what it was and where it came from, once they got their heads around it, they...

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...

If you've ever watched a video of someone doing some crazy parkour daredevil stuff, you might have wondered how they're still in the gene pool. But it turns out that all that dangerous behavior may be a pretty good thing after all, and...

Whether you’re trying to play Dungeons and Dragons or one of the many other TTRPGs out there, there’s a good chance your last campaign failed because there were simply too many adventurers in the party. And by "too many" I mean,...

Sometimes, an ancient document is lost to history. Sometimes, you find it covered in mold and written over by an ancient scribe. Fortunately, thanks to science, lost doesn't quite mean what it used to.



Hosted by: Stefan Chin...

You've heard of Pompeii and the volcano that wiped it out, but how much do you REALLY know about this incredibly famous place? Turns out there are a lot of mysteries that researchers are still studying, from the timing and causes of...

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...

Hollywood (and other fictional media) loves to show people dying in outer space. And it has several go-to causes of death, on a sliding scale of accuracy. But it turns out, reality has some ways to kill you that are far stranger than...

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...

Do you dream in color? For part of the 20th century, it was so rare, psychologists thought it meant something was wrong with you. For a generation, people dreamed in black and white, and TV might be to blame.



Hosted by:...

Today, humans live on just a few staple crops, like maize, rice, and wheat. But in the early days of agriculture, humans were domesticating foods left and right. Come with us as we discover the lost crops of North America, like pitseed...

Sometimes, humans invent a technology that changes the game. From ancient hand axes to gunpowder, here are 6 weapons that changed the course of human history.<b<br/>r/>

Hosted by: Reid Reimers (he/him)

Have you ever heard of the Emu War? It was a hilariously disastrous attempt at wild animal population control, and while you'd think that humans would have gotten better at that sort of thing in the last hundred-ish years, that doesn't...

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...