Oxygen is crucial for life as we know it, but before it could build up in our atmosphere, earth had to slow down.

Hank takes us on a journey to center of the Earth to explain both how the solid core formed and why it is so important for life as we know it.

Did you know that last year we had 28 of the fastest days ever recorded? Earth's rotation can be affected by a number of things, and scientists think we might someday need an unprecedented adjustment: deleting a second!

Does your toilet water drain differently than in the other hemisphere? Is it because of the Coriolis effect? Hank has some things to clarify about these questions, and more in this edition of I Don't Think It Means What You Think It Means.

What do astronomers look for when they study exoplanets for signs of alien life? Hank explains how space telescopes are already yielding tantalizing clues of what other worlds might hold -- including water! -- and how the next generation...

In 1965, MIT's Lincoln Laboratory saw their Lincoln Calibration Sphere 1 (LCS-1) launched into Earth orbit. It was an empty aluminum sphere and couldn't do any science of its own. But the world's most boring disco ball has played a huge...

Hank gets to the bottom of two studies reporting high sea ice coverage and snowmass in Antarctica in the same year that the Arctic has reported a record low of sea ice. What is going on here?

On the weekend of April 29th and 30th this year, a series of thunderstorms slammed the southern and midwestern US. SciShow News takes a look at those deadly storms using the latest, high-resolution data from the NOAA's GOES-16 weather...

What happens when a species is the only of its kind? This phenomenon is called a monospecific taxon. Studying these special species can help us better understand not just those sparse groups, but all life on this planet! Join Olivia...

Weather isn’t all sunshine and rainbows—sometimes it’s rain, and sometimes that rain looks like....blood?? Join us for wild episode of SciShow where we'll show you 5 scary weather phenomena that is downright spooky! Hosted by: Stefan Chin.

Scientists have discovered an underground lake of liquid water on Mars! While this isn’t itself evidence for life on Mars, it does raise some new possibilities.

Hank tells us three things we probably didn't know about the Voyager 1 spacecraft.

Wheezy Waiter announces the SciShow nominees for "Worst Science in a Film," & Hank talks about the bird flu and shares two sounds that had never been heard by human ears until very recently.

If a tree falls into the forest and doesn't decompose, what happens to it?

If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?

Carbon dating transformed fields like archeology and paleontology, but its use might be in danger.

This episode is brought to you by the Music for Scientists album! Check out “The Idea” music video here: • The Idea, written... . Given just a little time, bacteria could outgrow earth, so what's stopping them?

Dinosaurs were huge—it's common knowledge. So why aren't modern mammals anywhere near that size? In this episode of SciShow, Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size...

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...

Improving batteries is a tough problem, but it’s also an important one because in many ways the future of our planet also depends on the future of batteries. Luckily, scientists are on the case, figuring out ways to give this essential...

New research suggests climate change in the past might have helped dinosaurs spread across the world. And modern climate change is revealing some of the things they left behind.

Rocks are more than just rocks, they're the key to Earth's history!

This week's SciShow news brings you discoveries involving two of the most exotic substances on Earth - the world's rarest element and the world's oldest water. Two great tastes that taste great together? Stay tuned to find out.

Roots do more than hold plants in place -- they hold the planet in place. They're an important defense against drought and climate change, and of course, our actions are changing them.