Most of the meteorites that land on this planet are pretty tiny. And enough of them fall to Earth each day that, theoretically, you could find micrometeorite yourself.

Whether it's dandelions blooming in your backyard or purslane sprouting from the sidewalk, vegan forager Alexis Nikole Nelson is on a mission to show how freely growing flora could make its way to your plate. With contagious enthusiasm...

At TED2009, Al Gore presents updated slides from around the globe to make the case that worrying climate trends are even worse than scientists predicted, and to make clear his stance on "clean coal."

SciShow Space takes to you a world where the night is always dark, the tides are paltry -- and the days are only 8 hours long. See how different Earth would be if there were no moon!

Do you know how many people have been to the moon? Only 12! Part of the reason it's so few is because of how difficult it is to escape Earth and get into space in the first place. In this episode of Crash Course Kids, Sabrina talks about...

Have you ever wondered why, some nights, the moon looks like a big, bright circle, and some nights it looks like a little sliver? Join Jessi and Squeaks to learn about how the moon's orbit changes the way we see it here on Earth!

Given that Earth’s magnetic field helps protect its life-sustaining atmosphere, you might think that the stronger a planet’s magnetic field, the better. But as it turns out, some planets’ relationships with their magnetic fields are a...

In which John Green and Hank Green teach you about how human primates moved out of Africa and turned Earth into a real-life Planet of the Apes. And the apes are people! John and Hank teach you about how humans evolved, and the sort of...

In this video Paul Andersen explains how the global climate is changing as a result of natural phenomenon and human actions. Changes in the solar radiation due to variations in the Earth's tilt and orbit have caused the ice ages. ...

As small as Jupiter's moons are in comparison to the giant planet, they may actually have an important role to play in keeping each other warm, heating the moons enough to have liquid oceans!

Find out about the last time and the next time the Earth will be hit by a Gamma-ray Burst.

We humans like to think we’re special in basically all ways, but if the history of life is any indication, our species has a limited time on this planet. So the question is: when are we gonna go extinct?

If you’ve heard anything about pesticides, it’s probably about how toxic they are. But they make growing food more cost-effective, so when some make it into your groceries, how bad can they be?

From asteroids capable of destroying entire species to supernovae that could exterminate life on Earth, outer space has no shortage of forces that could wreak havoc on our planet. But there's something in space that is even more...

The ocean is the largest ecosystem on Earth, but it's still mostly unexplored. This is partially due to the challenges of ocean exploration, like bone-crushing pressure and the need to bring your own air. But here are five ways that...

Understanding gravity can sometimes be a bit of a balancing act, much like the fundamental laws of physics and how they inform what it is exactly that Earth orbits.

We all know that warm air rises, but how does this scientific fact influence our weather and create those flows of air molecules that we know of as wind? In this episode of SciShow, Hank explains where wind comes from, what factors...

In a series of visual, animated love letters, designer Debbie Millman reflects on the things she's grateful for by exploring the wonders of her garden, New York City, travel and storytelling. "As we navigate through this crisis, I'm...

India has a historic opportunity to power its industrialization with clean energy -- and its energy choices will make or break the world's fight against climate change, says clean energy executive, physicist and author Varun Sivaram....

There's a creeping sameness in many of our newest urban buildings and streetscapes, says architect Vishaan Chakrabarti. And this physical homogeneity -- the result of regulations, mass production, safety issues and cost considerations,...

Planetary alignments: They're the favorite astronomical scenario of kooks, con artists, and Hollywood producers everywhere. But has it ever happened? And what would it do to Earth if it did?

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.

SciShow Space News shares the latest developments from around the universe, including the discovery of water vapor on a new “exo-Neptune,” and cyanide found in the clouds where stars are born.

Paul Andersen surveys organisms in the protists. He reviews the diversity found within the domain Eukarya and explains that the Kindgom Protista is simple a junk drawer for organisms that don't fit elsewhere.