Instructional Video8:14
PBS

The 40 Million-Year-Old Ecosystem In Your Mouth

12th - Higher Ed
The hardened residue scraped off your teeth at the dentist is called your dental calculus, and your dental calculus is the only part of your body that actually fossilizes while you’re alive! And scientists have figured out how to study &...
Instructional Video9:58
PBS

That Time the American West Blew Up

12th - Higher Ed
How is it possible to have cataclysmic eruptions without any real cataclysm?
Instructional Video9:43
PBS

Something Has Been Making This Mark For 500 Million Years

12th - Higher Ed
Paleodictyon, a hexagonal-patterned fossil, is a bit of a mystery. We don’t even know if it’s a trace fossil, or the organism itself. So… what could it be?
Instructional Video9:12
PBS

Our “Junk DNA” Is More Important Than We Once Thought

12th - Higher Ed
In the search for the genes that make us human, some of the most important answers were hiding not in the genes themselves, but in what was once considered genomic junk.
Instructional Video9:54
PBS

Nautiloids Thrived For 500 Million Years Until These Guys Showed Up

12th - Higher Ed
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?
Instructional Video9:49
PBS

How Whale Evolution Kind Of Sucked

12th - Higher Ed
Mystacodon is the earliest known mysticete, the group that, today, we call the baleen whales. But if this was a baleen whale, where was its baleen? Where did baleen come from? And how did it live without it?
Instructional Video9:21
PBS

How We Figured Out Fermentation

12th - Higher Ed
Thanks to a recent adaptation, instead of getting sick from the boozy, fermented fruits, one of our primate ancestors could digest them safely, and get more calories at the same time. This new superpower would open up a whole new...
Instructional Video10:53
PBS

How the Starfish Got Its Arms

12th - Higher Ed
The story of how the starfish got its arms reminds us that even animals that might be familiar to us today can have incredibly deep histories - ones that stretch back almost half a billion years.
Instructional Video9:48
PBS

How Plants Became Carnivores

12th - Higher Ed
How and why does botanical carnivory keep evolving? It turns out that when any of the basic things that most plants need aren’t there, some plants can adapt in unexpected ways to make sure they thrive.
Instructional Video10:12
PBS

How Earth's First, Unkillable Animals Saved the World

12th - Higher Ed
They have survived every catastrophe and every mass extinction event that nature has thrown at them. And by being the little, filter-feeding, water-cleaning creatures that they are, sponges may have saved the world.
Instructional Video9:22
PBS

How Dogs (Eventually) Became Our Best Friends

12th - Higher Ed
We’re still figuring out the details, but most scientists agree that it took thousands of years of interactions to develop our deep bond with dogs. When did they first become domesticated? Where did this happen? And what did the process...
Instructional Video10:05
PBS

How Ancient Whales May Have Changed the Deep Ocean

12th - Higher Ed
It looks like the evolution of ocean-going whales like Borealodon may have affected communities found in the deep ocean, like the ones found around geothermal vents. And it turns out that when a whale dies, that’s just the beginning of...
Instructional Video9:43
PBS

How Ancient Art Captured Australian Megafauna

12th - Higher Ed
Beneath layers of rock art are drawings of animals SO strange that, for a long time, some anthropologists thought they could only have been imagined. But what if these animals really had existed, after all?
Instructional Video10:43
PBS

How a Mass Extinction Changed Our Brains

12th - Higher Ed
During one of the most pivotal moments in our evolutionary story our brains actually shrank relative to our bodies.
Instructional Video9:54
PBS

How (Some) Plants Survived The K-Pg Extinction

12th - Higher Ed
Perhaps for plants in times of great stress and ecological upheaval, the more DNA the better.
Instructional Video9:20
PBS

Giant Viruses Blur The Line Between Alive and Not

12th - Higher Ed
In 2003, microbiologists made a huge discovery. One that would force us to reconsider a lot of what we thought we knew about the evolution of microbial life: giant viruses.
Instructional Video8:54
PBS

Darwin Missed An Example of Evolution Right Under His Nose

12th - Higher Ed
Charles Darwin encountered a tiny fox-like creature during his famous voyage but instead of discovering its fascinating evolutionary story, he just knocked it on the head with his geology hammer.
Instructional Video8:14
PBS

Cordyceps Turned These Ants Into Zombies

12th - Higher Ed
This fungus was actually manipulating ants’ movements, forcing them to do something they’d never ordinarily do, something strange, yet specific…
Instructional Video8:21
PBS

Are We All Actually Archaea?

12th - Higher Ed
The unexpected discovery of an entirely new domain of life was pretty huge and surprising - even if archaea do just look like bacteria. But, in recent years, it’s been their connection to us that's turned out to be particularly full of...
Instructional Video9:19
PBS

A Short Tale About Diplodocus' Long Neck

12th - Higher Ed
Long necks gave sauropods a huge advantage when it came to food, but not in the way you think. And this benefit would allow them to become the biggest terrestrial animals of all time!
Instructional Video11:04
PBS

A Natural History of Mars

12th - Higher Ed
While Earth’s natural history has been playing out over the last few billion years, another epic planetary saga has also been unfolding right next door.
Instructional Video9:18
PBS

Why The Paleo Diet Couldn't Save The Neanderthals

12th - Higher Ed
These relatives of ours lived in Eurasia for more than 300,000 years. They were expert toolmakers, using materials like stone, wood, and animal bone. They were also skilled hunters and foragers, and may even have created cave art. So...
Instructional Video7:03
PBS

Why Sour May Be The Oldest Taste

12th - Higher Ed
While sour taste's original purpose was to warn vertebrates of danger, in a few animal groups, including us, its role has reversed. The taste of danger became something it was dangerous for us to avoid.
Instructional Video7:28
PBS

When Trees Took Over the World

12th - Higher Ed
420 million years ago, the forest floor of what's now New York was covered with a plant that didn’t look like a tree at all, except its roots were made of wood. Instead of looking up to learn about the evolution of trees, it turns out...