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 Video9:20
PBS

The Dinosaurs That Evolution Forgot

12th - Higher Ed
Where are all the east coast dinosaurs? Why don’t we find famous species like Triceratops in Central Park? Turns out, evolution and geology came together to make the east coast into an ancient lost world of weird dinosaurs.
Instructional Video9:32
PBS

That Time The Ocean Lost (Almost) All Its Oxygen

12th - Higher Ed
This is the story of how our planet rescued itself from extreme conditions in the Cretaceous Period, at the cost of essentially suffocating the oceans for half-a-million years.
Instructional Video8:59
PBS

The Huge Extinctions We Are Just Now Discovering

12th - Higher Ed
What graptolites tell us is a story of incredible changes in the ocean, of periods where the oceans became poisonous and suffocating before eventually clearing up again. They unlock extinctions and recoveries that scientists didn't see....
Instructional Video7:09
PBS

Beans & Bees (Not Bats) Gave Us Butterflies

12th - Higher Ed
Turns out, instead of having bats to thank for the existence of butterflies, the groups we should actually be thanking are…bees and beans.
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 Video8:04
PBS

The Second Time Sponges Took Over The World

12th - Higher Ed
Researchers have discovered a piece of a weird, but critical, time in the deep past…a time when the first-ever mass extinction may have turned Planet Earth into Sponge World.
Instructional Video11:26
PBS

When the Amazon Flowed Backwards

12th - Higher Ed
What did life look like when the Amazon watershed flowed backwards? How did its direction shape the evolution of life around it? And what force could have possibly been strong enough to up-end one of the world’s mightiest rivers between...
Instructional Video15:46
Be Smart

What Could We See with a Planet-Sized Telescope?

12th - Higher Ed
The James Webb Telescope just took a photo of a newly discovered exoplanet. Exciting stuff but the raw image just looks like a small, faint dot—not a fully detailed world. The question is, just how big would a telescope need to be to...
Instructional Video13:46
Be Smart

Why OOH Sounds Different Than AHH

12th - Higher Ed
Human language is an incredible thing: a combination of mouth sounds that we combine into words, sentences, poems, and constitutions. They carry meaning, emotion, and power. But underneath it all, language is really just physics. In this...
Instructional Video13:49
Be Smart

How Scorpions Became Earth’s Ultimate Survivors

12th - Higher Ed
Scorpions are a frightening and deadly group of animals. But their venom is one of nature's most unique chemical cocktails. Here’s how scientists are using it for inspiration to design new medicines and pain killers.
Instructional Video13:43
Be Smart

The Truth About Butterfly Metamorphosis (It's Very Weird)

12th - Higher Ed
Does any other creature on Earth undergo a life transformation as dramatic as the butterfly? I think not. Unfortunately, children's books about very hungry caterpillars skip all the COOL and WEIRD and GROSS stuff that happens along the...
Instructional Video11:05
Be Smart

Why Some of the Rainbow is Missing

12th - Higher Ed
Over 200 years ago, scientists were looking at sunlight through a prism when they noticed that part of the rainbow was missing. There were dark lines where there should have been colors. Since then, scientists have unlocked the secrets...
Instructional Video17:30
Be Smart

The Biggest Myth About Innovation

12th - Higher Ed
The idea of the lone genius creating everything isn’t just misleading. It’s harmful and wrong. Innovation thrives when people work together, and rather than nice linear paths, new ideas come from chance events and unexpected connections....
Instructional Video17:20
Be Smart

What is the Most Average Thing?

12th - Higher Ed
We may not know it, but averages affect our lives every day. Designers and manufacturers use averages to make our houses, cars, shoes and airline seats safer and more comfortable(ish). But calculating averages is way more complicated...
Instructional Video10:44
Be Smart

How Did X Become the Unknown (and so much else)?

12th - Higher Ed
X is everywhere and it’s probably thanks to math. But why is x the symbol for the unknown?
Instructional Video13:23
Be Smart

How Scientists Made the Hottest Thing Ever

12th - Higher Ed
At CERN, physicists are searching for answers to some of the biggest questions ever — like how the universe started and where everything comes from. To get one step closer to an answer, CERN scientists recreated the first moment after...
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...