Instructional Video15:52
PBS

Was the Gravitational Wave Background Finally Discovered?

12th - Higher Ed
A few weeks ago a large team of gravitational wave astronomers announced something pretty wild. The moderately confident detection of pervasive ripples in the fabric of space time that presumably fills the cosmos, detected by watching...
Instructional Video9:02
PBS

Why The Giraffe Got Its Neck

12th - Higher Ed
How and why the giraffe's neck emerged in the first place has been a mystery that generations of biologists have argued over – one that has made us reconsider our understanding of how evolution actually works over and over again.
Instructional Video8:03
PBS

Did a Tsunami Swallow Part of Europe?

12th - Higher Ed
What happened to the piece of prime prehistoric real estate known as Doggerland? While a massive megatsunami might have drowned it for good, the underlying reason that it now lies under the sea may have actually been the same thing that...
Instructional Video9:14
PBS

You're Living On An Ant Planet

12th - Higher Ed
How did ants take over the world? Well, it looks like they didn’t achieve world domination all by themselves. They may have just been riding the wave of a totally different evolutionary explosion.
Instructional Video7:51
PBS

Do Thunderbeasts Prove Giant Animals Are Inevitable?

12th - Higher Ed
The journey the thunder beasts took to reach such mega proportions from such humble beginnings forces us to ask an important question, one that paleontologists have been asking for more than a century: from an evolutionary perspective,...
Instructional Video10:45
PBS

Why Only Earth Has Fire

12th - Higher Ed
To get fire, which exists only on Earth, it took billions of years of photosynthesis – which means fire can’t exist without life. And fire and life have been shaping each other ever since.
Instructional Video8:00
PBS

What Was The Earliest Surgery?

12th - Higher Ed
When did practicing medicine - in its varied, complex forms (from sharing medicinal plants to the earliest surgeries) - become something that we actually started doing? While it’s a hard question to answer, it’s possible that our...
Instructional Video9:35
PBS

What Will Earth Be Like 300 Million Years From Now?

12th - Higher Ed
We spend a lot of time here on Eons looking backwards into deep time, visiting ancient chapters of our planet’s history. But this time, we’re taking a look towards the deep future. After all, the story is far from over.
Instructional Video10:19
PBS

The Hazy Evolutionary History of Cannabis

12th - Higher Ed
How did such a strange plant like cannabis come to be in the first place? When and where did we first domesticate it? And why oh why does it get us high?
Instructional Video10:46
PBS

No Single Cradle of Humankind

12th - Higher Ed
It would take decades for paleontologists to realize that maybe there wasn’t just one so-called "cradle of humankind," and realize that maybe they’d been asking the wrong question all along.
Instructional Video11:05
PBS

When India Was An Island

12th - Higher Ed
We need to talk about the biggest break-up of all-time: the break-up of the supercontinent Pangea, and how, ultimately, when India smashed back into Asia, it traded one form of evolutionary isolation for another.
Instructional Video9:59
PBS

The Graveyard at the Center of the Earth

12th - Higher Ed
Scientists have been trying to solve the mystery of why plate tectonics works the way it does for over a hundred years. And they might have just uncovered a key to cracking it.
Instructional Video12:13
PBS

Darwin's Unexpected Final Obsession

12th - Higher Ed
After having solved the small matter of evolution by natural selection - becoming one of the most famous scientists in the world in the process - Charles Darwin turned his focus to a different personal obsession…
Instructional Video10:14
Be Smart

Maybe We've Already Made First Contact…

12th - Higher Ed
There are hundreds of billions of planets in our galaxy. Scientists now think hundreds of millions of them have conditions where life could arise. What do scientists think are the best ways of reaching out to them? And why do some...
Instructional Video6:25
SciShow

How Do Eggs Know When to Hatch?

12th - Higher Ed
Are you an insect fetus who'd rather not get eaten by your siblings? How about a baby frog who'd rather not drown before getting to leave your egg? Well, you had better figure out a way to hatch when you need to.



Hosted by:...
Instructional Video9:56
SciShow

Why the Appalachians Contain Some of the Oldest Fossils on Earth

12th - Higher Ed
The Appalachian Mountains are some of the oldest geological features on earth. And they also hold fossils that tell us about some of the very earliest life forms that we'll ever manage to see in the fossil record. So how did these...
Instructional Video14:19
Crash Course

The Scientific Method: Crash Course Biology #2

12th - Higher Ed
Science offers a way of discovering and understanding the world around us, driven by questions and tested with evidence. And it’s a twisty-turny team effort— you won’t find many lone geniuses out there, or straight lines from hypothesis...
Instructional Video12:20
Crash Course

Introduction to Biology: Crash Course Biology #1

12th - Higher Ed
Biology is the study of life—a four-letter word that connects you to 4 billion years worth of family tree. The word “life” can be tricky to define, but a shared set of characteristics helps biologists identify living things. In this...
Instructional Video5:04
SciShow

The World's Biggest Geode Is A Literal Cave

12th - Higher Ed
If you were really into gift shops as a kid, you probably loved to look at all the shiny geodes. But those little geodes are nothing compared to the mother of all geodes, found is in Put In Bay, Ohio. So let's talk about how this...
Instructional Video7:23
SciShow

That Time NASA Put Astronauts in the World's Worst Carnival Ride

12th - Higher Ed
In the early 1960s, NASA rolled up to a US Navy facility in Pennsylvania with one goal in mind: stick its newly-minted astronauts into one of the most extreme centrifuges that has ever been built, and whirl them around really fast to...
Instructional Video5:59
SciShow

What Time Is It on the Moon?

12th - Higher Ed
If all goes well, we'll be sending astronauts back to the Moon in just a couple of years. And scientists have a lot to figure out before then, including the answer to a seemingly simple question: What time is it up...
Instructional Video7:29
SciShow

Medicine Cabinets Shouldn't Exist

12th - Higher Ed
The conditions in many medicine cabinets turn out to be detrimental for medicines—some worse than others. <b<br/>r/>

Hosted by: Hank Green (he/him)
Instructional Video9:54
SciShow

The Most Important Explosion in History

12th - Higher Ed
Not long after the supernova of 1604, the telescope was invented. But astronomers would have to wait nearly FOUR CENTURIES to witness the next supernova that was visible to the naked eye. It was 1987, and a blue supergiant in the Large...
Instructional Video10:58
SciShow

A Better Treatment for Overdose Is Coming

12th - Higher Ed
Naloxone, better known as Narcan, is today's gold standard to treat opioid overdose. But sometimes it comes up short against more potent opioids like fentanyl. So future treatments might take advantage of opioid receptor...