Crash Course
Evolutionary Development: Chicken Teeth - Crash Course Biology
Hank introduces us to the relatively new field of evolutionary developmental biology, which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes...
PBS
Dimetrodon: Our Most Unlikely Ancestor
With its lizard-like appearance and that distinctive sail on it back, Dimetrodon is practically the mascot of the Palaeozoic Era, a time before flowers, birds, mammals, and even crocodiles. But if you take a close look at this...
SciShow
How Close Are We to Cavity-Proof Teeth?
There’s nothing fun about getting a cavity! It can feel like there’s not much you can do to prevent them, but researchers are working on several ways to tackle their main cause so we can create a cavity-free world!
SciShow
SciShow Quiz Show: Hank vs. Stefan
Associate Producer Stefan Chin faces off against his boss, Hank Green. Will Stefan manage to keep his job? What does a dinosaur sound like? And where is that space whale?
SciShow
The Fish With Human Teeth
A fish with eerily human-like teeth was caught in a New Jersey lake. And scientists have learned to speak Bird!
SciShow
Why Do We Smile
Many species show off their teeth as a threat, so where did humans get our friendly smiles?
PBS
Why Megalodon (Definitely) Went Extinct
For more than 10 million years, Megalodon was at the top of its game as the oceans' apex predator...until 2.6 million years ago, when it went extinct. So, what happened to the largest shark in history?
SciShow
These Extinct Birds Really Stretch the Definition of “Bird”
From birds with no wings to giant fowl that were once mistaken for predators, here are 6 birds that who's strange features may not be what you think of when you think of birds!
SciShow
SciShow Talk Show: Animal Weapons with Doug Emlen & A Southern Three-Banded Armadillo
This week on the SciShow Talk Show Doug Emlen talks about animal weapons! Jessi from Animal Wonders joins the show to talk about animal defenses and introduce us to the southern three-banded armadillo.
SciShow
Hyenas Once Lived in the Frigid Arctic
Prehistoric teeth prove that hyenas once roamed the Arctic and the relationship between ancient crocodiles and climate is more complicated than we thought.
SciShow
What Zinc Means for Megalodon’s Extinction | SciShow News
This week in the journal Nature Communications, scientists report a way to use fossilized shark teeth to figure out where different shark species, including megalodon, stood in the web of life. And last week in the journal Scientific...
SciShow
How Do Desensitizing Toothpastes Work?
Do popsicles give you toothaches? Do you wonder why that special toothpaste makes it all better? We've got you covered!
SciShow Kids
Viewer Mail From London! Science for Kids
Join Jessi and Squeaks in their brand new fort as they answer letters from their friends in Ivydale, England!
SciShow
SciShow Quiz Show: Battle of the Brains!
It's the battle of the SciShow Psych Hosts: Brit Garner and Hank Green! Brit came prepared, but can Hank still win the game for his Patron?
SciShow
Strontium: It Knows Where You've Been
Your teeth contain traces of strontium isotopes that can reveal where you lived while they were forming.
SciShow
Mountain Pine Beetle Update: SciShow Talk Show
SciShow welcomes back Diana Six to talk to us about current news on the Mountain Pine Beetle Outbreak. Then, Jessi Knudsen Castañeda stops by and brings a familiar friend whose anatomy may help scientists develop better hypodermic...
SciShow
Vampires: The Science Behind the Myth
You've heard of vampires (pale, undead, sometimes sparkly), but did you know some of these myths have basis in scientific fact?
SciShow Kids
Fun Facts About Turkeys!
Jessi and Squeaks learn some amazing turkey facts, from the sounds they make to what their poop looks like!
SciShow
How to Find Out Why T. rex Arms Were… Like That | SciShow News
This week, a new theory as to why the mighty and fearsome Tyrannosaurus rex has such cute little arms. And in more fossil news, recently discovered giant ichthyosaur bones present a different picture of the Triassic.
SciShow
Why Don't Sleeping Bats Fall Down?
Bats sleep upside down, so how come they don't fall? Turns out that they've got some unusual legs.
SciShow
New Ancient Human Fossils
With the analysis of seven hominin fossils discovered in 2014, researchers are now adding another piece to the human evolution puzzle. Also in this episode: we add a new face to the SciShow team!
SciShow Kids
What Are Owl Pellets?
Jessi and Squeaks want to learn about what (and how) owls eat! Time to experiment!
SciShow
Vestigial Structures
Hank talks about some of the structures in our bodies that are "leftover" from previous evolutionary phases of humanity.
SciShow
Ghost Crabs Take Stomach Growling to a Whole New Level
You think your tummy rumbles? Meet the ghost crab — it growls using teeth inside its stomach, and not because it’s feeling peckish!