PBS
How the Himalayas Changed the World
New ReviewThe rise of the Himalayas affected more than just the immediate area. Turns out, we may have them to thank for everything from the rise of giant flightless birds in Madagascar; to the disappearance of plants from Antarctica; to the...
PBS
That Time The Ocean Lost (Almost) All Its Oxygen
New ReviewThis 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.
PBS
Why Only Earth Has Fire
New ReviewTo 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.
PBS
When The Atlantic Ripped Open A Supercontinent
New ReviewWhile the eruptions of the volcanoes along the Mid-Atlantic Ridge usually don't trouble us, their birth was once responsible for ripping a supercontinent apart and creating the Atlantic Ocean that we know today.
PBS
How Asteroids Set the Stage for Life on Earth
New ReviewWe may have planet-shattering asteroids to thank for the origin of life on Earth.
Be Smart
Will Earth Run Out of Oxygen
New ReviewPlants eat sunlight and air to make life. But the key enzyme behind it all, called RuBisCO, isn’t actually all that great at its job. Let’s talk about how photosynthesis really works, why oxygen isn’t coming from where you think, and...
SciShow
The Real Reason the Sky is Blue
If someone (say, a small child) asks you why the sky is blue, you might dive into an explanation of Rayleigh scattering. But if you want to give them a way cooler explanation, you can tell them it's because of bacteria. Hosted by: Stefan...
SciShow
What is a Fish?
In this special episode, marine biologist Jaida Elcock (@sofishtication) joins Hank Green for a conversation all about fish! As our first SciShow Resident, Jaida spent the last 17 weeks writing and hosting a series of videos that will...
SciShow
We Used To Clean Our Clothes With Gasoline
Dry cleaning has gone from kerosine to perc to wet cleaning in an attempt to make it less ...deadly. Over the years, dry cleaning has evolved to address the dangers of flammability, interactions with your lungs, and environmental harm,...
SciShow
That Time Our Ancestors Almost Went Extinct
There's a lot of humans on our planet. But our global domination was hardly a given. New evidence suggests that our ancestors were on the brink of total extinction nearly a million years ago. So let's talk about that time when the Homo...
SciShow
Permafrost Is Not What You Think It Is
If you've ever heard about things like mammoths being found in permafrost, you may have an image in your head of what that looks like. But you might be wrong! So let's talk about what permafrost really is, why it's so important, and why...
Crash Course
Animal Infrastructure: Why You’re More Than Goo: Crash Course Biology #44
When you think about the body’s infrastructure, you probably think of bones. But what about the heart, the blood vessels, and the lymphatic system? In this episode of Crash Course Biology, we’ll tour the cardiovascular, lymphatic, and...
Crash Course
How Animals Turn Resources Into Waste: The Poop Episode: Crash Course Biology #43
Yep, this is the poop episode. Getting resources and getting rid of waste is so important, we have three whole systems dedicated to it! In this episode, we’ll learn how the respiratory system, digestive system, and urinary system work,...
Crash Course
Plant Anatomy & Physiology: Plants Are Hardcore: Crash Course Biology #42
Plants may not seem like they’re doing much, but if you look closer, you’ll find a whole world just lurking beyond the surface. We’re talking chemical defenses, highways, and even ways to change the weather. In this episode, we’ll learn...
Crash Course
Photosynthesis: The Original Solar Power: Crash Course Biology #28
Photosynthesis is a powerful process that is responsible for some of life’s most vital functions. In fact, consumers like us rely on photosynthetic producers to harness energy from the sun so that we can survive and thrive. In this...
Crash Course
Cellular Respiration: Do Cells Breathe?: Crash Course Biology #27
You know ‘em, you love ‘em. They’re the powerhouse of the cell: mitochondria. They produce the ATP molecules that we use to do everything from talk to our friends to run a marathon. In this episode of Crash Course Biology, we’re taking a...
Crash Course
Chemical Reactions in Biology: Crash Course Biology #26
Cells need energy to power the chemical reactions that keep their microscopic cities running, and most of that energy comes from a chemical called ATP. In this episode of Crash Course Biology, we’ll learn how our cells use energy, what...
Crash Course
The Effects of Climate Change: Crash Course Biology #9
Climate change shakes up all of Earth’s systems, including the living ones. In this episode of Crash Course Biology, we’ll see how climate change’s effects rattle the entire chain of life. Changes felt in one population ripple out to...
Crash Course
What is Climate Change?: Crash Course Biology #8
Life on Earth has weathered boiling-hot oceans and volcanic-ash-darkened skies—but that’s nothing like the climate change we’re experiencing now. In this episode of Crash Course Biology, we’ll talk about the greenhouse effect, learn why...
Bozeman Science
Coral Bleaching
In this video Paul Andersen shows how increasing ocean temperatures causes coral polyps to release their symbiotic algae. This process of coral bleaching decreases the availability of energy for the coral and may eventually lead to coral...
TED-Ed
Rocks could save the world (Yes, rocks) | Elise Cutts
Mount Teide is one of the world’s largest active volcanoes, and there may be a way to use the basalt rock inside it to save humanity. Obviously, destroying an ancient volcano would cause catastrophic and unpredictable ecological fallout....
Amoeba Sisters
Ecology Review: Food Chains & Webs, Relationships, Nitrogen & Carbon Cycles, Effects on Biodiversity
Join the Amoeba Sisters in this longer review video as they review food chains, food webs, how energy flows through trophic levels (including the 10% rule), ecological relationships (including parasitism, mutualism, and commensalism),...
Bozeman Science
The Hierarchy of Life
Paul Andersen explains how biology is ordered in the hierarchy of life. He first of all describes how emergent properties appear as you move to more inclusive systems. The then describes life at the following levels; atom, molecule,...