Instructional Video10:38
PBS

How Asteroids Set the Stage for Life on Earth

12th - Higher Ed
We may have planet-shattering asteroids to thank for the origin of life on Earth.
Instructional Video10:40
PBS

The Mystery of the Cretaceous Pompeii

12th - Higher Ed
Since the 1990s, paleontologists have been pulling 125-million-year-old complete dinosaur skeletons from the rocks of the Lujiatun in Northeastern China, most seemingly posed in perfect rest. This has prompted comparisons to a famous...
Instructional Video10:10
PBS

How Mountains Make Evolution Weird

12th - Higher Ed
Mountains have a unique effect on diversity, messing with our understanding of animals through time, and pretty much just making evolution weird. And they would eventually reveal something even stranger about a group of mammals even...
Instructional Video12:38
PBS

Why Wasn't There A Second Age of Reptiles?

12th - Higher Ed
An asteroid impact triggered the K-Pg mass extinction, wiping out the non-avian dinosaurs, ending the Age of Reptiles, and ushering in the Age of Mammals. But why was it the mammals who triumphed?
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 Video8:11
PBS

Webs vs Wings: the Arms Race of the Air

12th - Higher Ed
Spiders and their ancestors have been driving an arms race that began before either stepped foot onto land and resulted in the first powered flight on Earth. But how did this competition of webs versus wings drive such a massive...
Instructional Video9:41
PBS

When Red Pandas Roamed North America

12th - Higher Ed
How did a relative of the red panda end up in North America? What can this tell us about how long ago – and how many times – North America was connected to Europe and Asia?
Instructional Video8:36
PBS

Could This Sperm Whale Eat The Meg?

12th - Higher Ed
Unlike in fiction, giant whales do not emerge fully-formed from the ocean deep. So, where did Livyatan melvillei come from? How did such a large predator live? And what caused the titan to die out? The answer may lie in an appetite so...
Instructional Video12:30
PBS

Are All Oceans Basically Reincarnated?

12th - Higher Ed
This is the hundred-year tale of how an unlikely bunch of bottom-dwelling marine critters helped reveal that ocean basins are basically reincarnated every few hundred million years.
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 Video8:37
PBS

Why Paleontologists Can’t Stop Fighting About Spinosaurus

12th - Higher Ed
What does it mean to be a “semi-aquatic” dinosaur? Was it wading in the shallows, or could it have been a skilled swimmer? Each scenario paints a very different picture of Spinosaurus, and the discovery of new fossils has paleontologists...
Instructional Video12:23
PBS

The Dinosaurs Too Big To Be Dinosaurs

12th - Higher Ed
How did sauropods, uniquely large land animals, actually live, with their anatomy and physiology pushed to such extremes? Well, their unprecedented gigantism came with some equally massive costs…
Instructional Video5:38
PBS

The Calendar, Australia & White Christmas

12th - Higher Ed
Australia will perpetually encounter the season opposite to the one we in the northern hemisphere will encounter, so does this means that Australia will never get a white Christmas?
Instructional Video8:36
PBS

Voting Systems and the Condorcet Paradox

12th - Higher Ed
What is the best voting system? Voting seems relatively straightforward, yet four of the most widely used voting systems can produce four completely different winners.
Instructional Video7:36
PBS

The Extinction That Never Happened

12th - Higher Ed
Natural history is full of living things that were long thought to have gone extinct only to show up again, alive and well. Paleontologists have a word for these kinds of organisms: They call them Lazarus taxa.
Instructional Video8:48
PBS

How Plankton Created A Bizarre Giant of the Seas

12th - Higher Ed
At more than 2 meters long, Aegirocassis was not only the biggest radiodont ever, but it also may have been the biggest animal in the Early Ordovician. This bizarre marine giant may have only been possible, thanks to a major revolution...
Instructional Video7:53
PBS

How Ankylosaurs Got Their Clubs

12th - Higher Ed
While clubs are practically synonymous with ankylosaurs, we’ve only started to get to the bottom of how they worked and how this unusual anatomy developed in the first place.
Instructional Video7:55
PBS

How a Mass Extinction Event Created the Amazon

12th - Higher Ed
The Amazon rainforest of South America is a paradise for flowering plants. But long ago, the landscape that we now think of as the Amazon looked very different. And would you believe that the entire revolution of the Amazon began with...
Instructional Video7:41
PBS

Did An Ancient Pathogen Reshape Our Cells?

12th - Higher Ed
There is one - and only one - group of mammals that doesn’t have alpha-gal: the catarrhine primates, which are the monkeys of Africa and Asia, the apes, and us.
Instructional Video8:13
PBS

How Our Deadliest Parasite Turned To The Dark Side

12th - Higher Ed
Around 10,000 years ago, somewhere in Africa, a microscopic parasite made a huge leap. With a little help from a mosquito, it left its animal host - probably a gorilla - and found its way to a new host: us.
Instructional Video6:33
PBS

How Horses Went From Food To Friends

12th - Higher Ed
Do our modern horses descend from just one domesticated population, or did it happen many times, in many places? Answering these questions has been tricky, as we’ve needed to bring together evidence from art, archaeology, and ancient...
Instructional Video7:21
PBS

How Did Our Most Famous Ancestor Really Die?

12th - Higher Ed
Did our most famous fossil ancestor, Lucy, die by falling out of a tall tree? The answer is part of a decades-long debate over how, exactly, our ancestors transitioned from life in the trees to life on the ground.
Instructional Video9:28
PBS

How 7,000 Years of Epic Floods Changed the World (w/ SciShow!)

12th - Higher Ed
Strange geologic landmarks in the Pacific Northwest are the lingering remains of a mystery that took nearly half a century to solve. These features turned out to be a result one of the most powerful and bizarre episodes in geologic...
Instructional Video12:08
PBS

Why Do You Remember The Past But Not The Future?

12th - Higher Ed
The laws of physics don’t specify an arrow of time - they don’t distinguish the past from the future. The equations we use to describe how things evolve forward in time also perfectly describe their evolution backwards in time. So the...