SciShow
The Artificial Sweetener That's Actually Good For You
You may have heard some pretty bold claims about xylitol, a sugar substitute that's in a lot of things. And while it's definitely bad for dogs, it's great for people, and there's a lot of research out there about some surprising ways...
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,...
MinuteEarth
Why Do People Hate Koalas?
On the Internet, koalas get an unnecessary amount of hate, so let's debunk some of the most pervasive koala myths!
SciShow
What Do We Actually Know About Depression? | Compilation
One of the topic that we've talked about the most is depression. It is a really complicated subject, so we’ve put together some of our episodes about depression to hopefully help you understand more about it.
TED-Ed
TED-Ed: The most important anus in the ocean
Is it a fuzzy sock? An overripe banana? A moldy tube of toothpaste? In fact, it’s a humble sea cucumber: a brainless, fleshy form surrounding a digestive tract, and bookended by a mouth and an anus. And while it might look odd, its daily...
Crash Course
Your Immune System: Natural Born Killer - Crash Course Biology
Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us - also known as our immune system.
SciShow
Why Does COVID-19 Have So Many Symptoms?
For a respiratory disease, COVID-19 sure seems to affect more than just the respiratory system. Scientists think the receptor ACE2 is to blame.
SciShow
4 Animals That Don’t Have Resident Gut Microbiomes
We humans couldn’t live without our gut microbes, but not all animals rely on microscopic digestive communities like we do. And understanding why these animals ditched their microbial partners can teach us a lot about the costs and...
SciShow
What We've Learned from Fossilized Farts
We tend to think of fossils as dinosaur bones or petrified wood, but what if we told you that there's a lot we can learn from fossilized waste?
SciShow
On the Origin of Butts
We’ve already been told that everybody poops - but did you ever stop to consider why? It’s thanks to our heroic through-gut that humans don’t suffer the same fate as jellyfish and anemones, and every hero has an origin story…
SciShow
Underwater Animals Are So Loud, They'd Damage Our Hearing
We often think of the ocean as a pretty serene, lovely place to relax. But it turns out there's quite a racket going on under the waves, and some of the culprits are not the animals you'd expect!
SciShow
7 Species That Really Are What They Eat
There are creatures who get some super important and recognizable part of their biology from their diets.
SciShow
These 'Fossilized Brains' Might Not Be Brains At All
A new study calls the claims of fossilized brains into question, and another finds ichthyosaurs might have been bigger than our current champions, the blue whales.
SciShow
Anal Teeth, Paralyzing Farts, and Other Weaponized Butts
All animals have adaptations that help them survive in the wild...some just focus more on back-end development than others. Whether for offense, defense, or both, here are five creatures with butt-kicking behinds!
Crash Course
The Digestive System: CrashCourse Biology
Hank takes us through the bowels of the human digestive system and explains why it's all about surface area.
TED-Ed
TED-Ed: You are your microbes - Jessica Green and Karen Guillemin
From the microbes in our stomachs to the ones on our teeth, we are homes to millions of unique and diverse communities which help our bodies function. Jessica Green and Karen Guillemin emphasize the importance of understanding the many...
SciShow
4 Common Misconceptions About Antidepressants, Debunked
Mental health is incredibly complex, due in no small part to the complicated interactions of chemicals and neuroreceptors in our brains. Here are four common misconceptions about antidepressants, and what the science behind them actually...
Crash Course
Animal Development: We're Just Tubes - Crash Course Biology
Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes.
TED-Ed
TED-Ed: How do carbohydrates impact your health? - Richard J. Wood
The things we eat and drink on a daily basis can impact our health in big ways. Too many carbohydrates, for instance, can lead to insulin resistance, which is a major contributor to cardiovascular disease and Type 2 Diabetes. But what...
Professor Dave Explains
Introduction to Phylum Chordata: Chordate Characteristics and the Chordate Cladogram
We have now completed our study of every single animal phylum but one: Chordata. This is the one that contains humans, as well as the most common animals we interact with every day, like our pets. There are about 81,600 species of...
Curated Video
7 Facts about Probiotics or Good Bacteria
Howcast - Learn about probiotics, aka good bacteria, from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems.
Curated Video
How to Prevent Stomach Bloating
Howcast - Learn how to prevent stomach bloating from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.
Curated Video
What Causes Stomach Cramps?
Howcast - Learn what causes stomach cramps from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.
Curated Video
How to Treat & Prevent Stomach Cramps
Howcast - Learn how to treat stomach cramps from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.