A world without predators. It sounds like a safer, happier world, but come on, this is science…

Most living things on Earth need oxygen to survive, but scientists discovered a species of bacteria that uses oxygen totally differently from every other organism on Earth.

Life in Antarctica's ocean has followed a completely different evolutionary path from other ocean life because of how cold and isolated the ocean is.

Despite the seemingly basic things we don't know about dinosaurs, we do know some surprising things – like their body temperatures.

Why is the middle of a hurricane sometimes so clear and calm?

While many researchers are focusing on finding a difference in brains of people with dyslexia, some new research suggests it might not just be in their brains, but in their eyes.

Insects are the world’s most numerous and diverse animals. Even where you’d least expect them in some of Earth’s most extreme environments, there they are. From a scalding volcano, parched desert, to a frigid glacier, insects are living...

Join SciShow Space as we complete our tour of the Solar System planets with the ice giants, Uranus and Neptune.

NBC & YouTube actually asked us to make TWO videos for the Democratic Presidential Debate on January 17th, 2016. Here's the video that DIDN'T get shown at the debate. Want to learn more about the topic in this week's video? Here are some...

Evolution vs Natural Selection

Join Squeaks and Jessi as they learn about a time when lots of animals switched places -- like bears, sloths, armadillos, and more.

In this episode of SciShow Kids, Jessi and Squeaks learn about places with record-breaking rainfall.

In May of 1945 the Third Reich was in chaos. Adolf Hitler was dead and German surrender was imminent. But while World War II was almost over, a new war was brewing. And the US was eager to recruit the smartest minds in Germany before the...

Stars have cores hot and dense enough to force atomic nuclei together, forming larger, heavier nuclei in a process known as fusion. In this process, the mass of the end products is slightly less than the mass of the initial atoms. But...

Unlike Earth, our Sun is a giant ball of mostly hydrogen and helium. Astronomers managed to figure that one out roughly 100 years ago. But after all this time, they still can't come to an agreement on what "mostly" means, precisely.

January babies, rejoice! This month's SciShow Rocks Box video is the story of garnets, and how these fabulous gemstones help us solve geological mysteries, from the Italian Alps to the Himalayas.

You might have heard of the ongoing volcanic eruptions near Grindavík, Iceland. You might not have heard that it's hard to monitor a volcano in the dark. We'll talk about why an Icelandic winter is the worst time for monitoring equipment...

CRISPR is a powerful gene editing tool, but its uses have been purely scientific until now. In 2023, US and UK drug regulators including the FDA approved Casgevy, a CRISPR/Cas9-based therapy for sickle cell disease and beta-thalassemia....

Many patients experience changes to hair texture after chemotherapy known as "chemo curls." But why do they happen, and how many people get chemo curls? This episode will explain.

Horizontal gene transfer might not be the flashiest of names, but animals are using it to create genetic hybrids without a human in sight. Like frogs rocking the DNA snippets of snakes, and fish sharing antifreeze superpowers.

We know a lot about fossils, but there's one thing about all those long-dead organisms that's hard to figure out -- their sex. So let's talk about the ways we can try to determine whether those T. rex bones came from a male or a...

When you think of newer ways to make electricity, solar cells and wind turbines may come to mind. But scientists can make the stuff from just about anything. And they're working on some truly bizarre ways to generate power.

After the Chernobyl Disaster, researchers have been studying the movement of radioactive contamination all over central Europe. Fortunately, that radioactive contamination is decreasing in just about every living thing, except for one...

In 2023, a team of researchers proposed that our universe experienced not one, but TWO Big Bangs about a month apart from one another. The first for the stuff described by our Standard Model of Particle Physics. And the second for that...