Water is a special substance for several reasons, and you may have noticed an important one right in your cold drink: ice. Solid ice floats in liquid water, which isn't true for most substances. But why? George Zaidan and Charles Morton...

Black holes are everywhere, including at the center of our galaxy. But because they’re invisible they’re quite difficult to study. Looking at the disks of material surrounding them, however, can give us tons of clues about how they...

A lot of people talk about humans colonizing Mars, but what about Venus?

In nature, most of our basic forces both attract and repel. In fact, gravity is the only exception. But, according to theorists, sound waves actually have negative gravity.

Researchers have finally determined how long a day on Venus is, give or take an episode of Brooklyn 99.

Building a perfect igloo takes cool science!

Hank acknowledges the amazing feat performed by Felix Baumgartner and answers many of your questions about why it is so amazing.

If you’ve been brave enough to open your eyes underwater, you might have noticed that everything is blurry. But fish have no trouble finding their way beneath the waves. So why can’t we see as clearly below as we do above?

You know how you somehow end up getting smoke in your eyes wherever you stand around a bonfire? Well, it turns out that’s not a curse! It’s much more easily explained with physics. "The more protractors, the better the party." ~Hank Green

There are 118 elements on the periodic table, but it seems like only a handful of them get any attention. But just because you haven't heard of an element doesn't mean that it isn't a vital part of everyday life.

SciShow Space takes you behind the scenes of astronaut training, to show how crew members and their equipment are tested in microgravity, all while never having to leave Earth.

Avalanches can be powerful and dangerous, but not all of them are created equal, and not everything you've seen on TV is likely to actually set one off.

There's basically a hole in the universe -- a region where there's much less matter than there should be. And we don't know why it's there.

You probably won't get stuck in quicksand. But if you do, you can use physics to get yourself out.

The results are in from the neutron star collision this past August! Astronomers are revealing what they've learned so far, with more pure gold research underway!

Not all hardwood trees have hard wood and softwoods soft wood, because these terms denote their taxonomic ancestry, not the wood's actual hardness.

For years, astronomers have been unable to find up to half of the baryonic matter in the universe. We may just have solved this problem.

Though our Sun is something we can count on to rise and set each day, it also comes with some phenomena that can catch us by surprise: solar winds. To better predict when these winds will travel all the way to Earth, we sent the Parker...

When nutrients from the ocean depths reach the sunlit surface (like in the Galapagos), life is more productive.

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Neutron stars are some of the strangest things in the universe, but are they the source of the mysterious Fast Radio Bursts? Or is it aliens? Spoilers: probably not aliens.

SciShow Space takes you on a tour of Venus, a world with such an extreme environment that you might call it "Earth's evil twin."

Wind is everywhere. The air is constantly moving, sometimes gently, sometimes violently. Why? Pressure, temperature and rotation come together to make wind. Here's how.

Ever notice how cereal clumps up in your bowl, or how cereal sticks to the edges of the bowl? Bubbles in beverages do the same thing.You've probably seen this surface tension and buoyancy at work, but did you know there's some...

Hot Air Balloons! They're those big, beautiful balloons people can float up to the sky in-- but how do they get up there?!