Jessi and Sam the Bat talk about the biggest volcano ever that we know of. And it's not on Earth. It's Olympus Mons, on the planet Mars!

Squeaks is looking to plan his next vacation. Jessi tells him all about the amazing volcanoes you can find in

EMPs aren’t science fiction. Real militaries are experimenting on real EMP generators, and as Starfish Prime showed us, space nukes can send powerful EMPs to the surface. So what exactly is an EMP, and how dangerous are they?

Despite what you may have heard or learned in school, the sun is NOT in fact the center of the solar system. And it won’t be until 2027… But this being a science channel, you might be thinking “What the heck is this guy talking about? Of...

Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb...

You've probably heard the rule that you cannot travel faster than the speed of light (in a vacuum). And this is true.

You may also have heard that you cannot travel precisely AT the speed of light. But this is false...because you...

Fighting climate change is much like long-distance running: a complex journey filled with obstacles, fast-changing conditions and the need for constant adaptation. Drawing on his own experience as an ultramarathon runner, energy expert...

For social media creator and viral video hitmaker Jenny Hoyos, the key to telling a great story is to keep it brief. She breaks down her framework for telling stories in 60 seconds or less that can gain millions of views online — or...

Two species of Demodex mites specifically inhabit human follicles. And not just some people’s— nearly everyone is thought to host mites. One person’s face might harbor hundreds or even thousands of individual mites. On any given day,...

The sun rises in the east, the moon rises in the east, and the stars rise in the east... but solar eclipses, oddly, come from the west. If total eclipses are caused by the sun and the moon, why don't they behave like the sun and the moon?

If the earth is spinning to the east at 1000 miles per hour... why can't we fly west more easily?

Have you ever wondered why you look up and see a dark sky at night?

What IS Angular Momentum?

The basic physics behind how rockets work!

This video is chapter 6 in my series on special relativity, and it covers the topic of relativistic addition of velocity: aka, how things that are moving relative to one inertial reference frame, which is moving relative to another...

Is it Better to Walk or Run in the Rain

You might think of national parks as a nice place to see a geyser, or a big ol’ canyon, but over the past 100 years, US national parks have produced some of the biggest, oldest, deepest, and creepiest discoveries that have been made in...

This video is about the orbital mechanics of why it's so hard to crash into the sun - the energy it takes to get there is astoundingly high, compared with leaving the solar system.

This video is about gravitational waves in the weak field limit as discovered by the LIGO collaboration, explained by parallels to electromagnetic radiation, sound waves, water waves, etc. I want to see Cat LIGO ASAP!

Ever wonder how Einstein proved E=mc2? This is how. Pi day (3.14) is Albert Einstein's Birthday! To celebrate, we'll explain 4 of his most groundbreaking papers from 1905, when he was just 26 years old

You've heard of E=mc2... but you probably haven't heard the whole story.

This video is about the famous 'Twins paradox' of special relativity, how time can appear to be faster for two different observers at the same time, and which twin really is older (or younger) - the one who stays on earth or the one who...

Plate Tectonics Explained

Immovable Object vs. Unstoppable Force - Which Wins