MinutePhysics
What is Sea Level
An oblate spheroid is a special case of an ellipsoid where two of the semi-principal axes are the same size.
MinuteEarth
Where Did Earth's Water Come From?
Earth didn't have water when it formed, but it does now! How did it get wet?
PBS
How Plate Tectonics Gave Us Seahorses
How did seahorses — one of the ocean’s worst swimmers — spread around the globe? And where did they come from in the first place?
PBS
Where Did Water Come From?
Mercury, Venus, and Mars are all super low on water – so where did ours come from and why do we have so much of it? We think our water came from a few unlikely sources: meteorites, space dust, and even the sun.
PBS
The Sudden Rise of the First Colossal Animal
A truly enormous ichthyosaur around the size of a modern sperm whale, reached its size within just a few million years of taking to the water - a blink of an eye in evolutionary time.
PBS
Nautiloids Thrived For 500 Million Years Until These Guys Showed Up
Around 30 million years ago, a new group of predators began to push nautiloids from their former global range into a single remaining refuge. But who were these predators?
PBS
How Plants Caused the First Mass Extinction
In the middle of the Cambrian, life on land was about to get a little more crowded. And those newcomers would end up changing the world. The arrival of plants on land would make the world colder, drain much of the oxygen out of the...
Be Smart
Is Earth's Most Important Ocean Current Doomed?
Ocean currents are our planet’s circulatory system, and they keep everything from ecosystems to the climate healthy. But we’re changing Earth in ways that threaten to disrupt and even break critical ocean currents like the planet-wide...
Be Smart
Why the Plastic Pollution Problem Is So Much Worse Than You Think
There’s been a lot of talk on YouTube lately about ocean plastic pollution and #TeamSeas. But there hasn’t been enough talk about the *ridiculously unthinkable scale of the ocean plastic pollution problem* or how it intersects with other...
Be Smart
Inside a Machine That Can Recreate Hurricanes (for Science)
Hurricanes, typhoons, and tropical cyclones are Earth’s most powerful storms, capable of unleashing destruction and death on coastal areas worldwide. As climate change warms Earth’s oceans, we face more risk of storms rapidly...
SciShow
The Southern Hemisphere is Colder, Stormier, and... Cleaner?
You'd think that the Northern and Southern Hemispheres would be basically symmetrical -- that since our planet is a ball, the climate, temperature, and weather patterns would be the same on top as on the bottom. But there are some...
MinuteEarth
Why Continents Are High
Lots of geological forces need to come together for continents to form, but they all require one ingredient: water.
SciShow
The World's Next Ocean
A volcanic eruption and series of earthquakes in 2005 were important not because they did a great deal of damage to humans, but because they’re geologic evidence of where Earth’s next ocean will most likely pop up.
SciShow
Why’d the Ocean Stop Getting Saltier?
If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?
SciShow
Why Frogs Sometimes Fall From the Sky
It doesn't seem possible, but animal rain is definitely real, and there is an actual scientific explanation for it... probably.
SciShow
Underwater Discovery and Adventure: The Story of Jacques Cousteau
Learn about the famous red hat wearing underwater explorer Jacques Cousteau! Hosted by: Hank Green
SciShow
3 Secrets About Ancient Earth, Hidden in Marine Fossils
Fossils can provide clues to the conditions that ancient species lived in, like what their environments felt like, how deep in the water some species lived, or even how long the Sun was out!
SciShow
Earth Has Another Magnetic Field
You probably know about the geomagnetic field that protects the earth from solar storms and radiation. But precision satellites have measured ANOTHER magnetic field coming from Earth, and its signals might hold the key to searching for...
SciShow
A Brief History of Life: Survival Is Hard
It turns out life may have gotten its start pretty early in Earth's history, and while the first couple billion years saw several important developments, the period was still dominated by very simple life forms. This is our first...
SciShow
It Seems like Trees Caused a Mass Extinction
When it comes to mass extinctions, you probably imagine giant volcanic eruptions or asteroids raining fire from the sky, but sometimes these events can have some unexpected causes. Hosted by: Michael Aranda
SciShow
6 Mysteries Geologists Can't Solve
There are some geological areas on the planet that scientists still don't understand. For most things it's pretty clear—combine a volcanic eruption a dash of erosion, and boom, you’ve got a striking cliff! But not all the features on...
SciShow Kids
Looking at the Earth! | How We Study Space | SciShow Kids
If you were looking down at the Earth from space, what would you be able to see? Do you think you would be able to see your house? What if you were super far away?
SciShow Kids
Learn About the Oceans!
Learn about the oceans with some of Jessi and Squeaks' favorite ocean videos!