Crash Course
Urinary System, part 1: Crash Course A&P
Even though you probably don't choose to spend a lot of time thinking about it, your pee is kind of a big deal. Today we're talking about the anatomy of your urinary system, and how your kidneys filter metabolic waste and balance salt...
SciShow
The Poison Squads: The Stupid, Risky First Food Safety Tests
It can be easy to take for granted the fact that there isn’t formaldehyde in your milk.
Crash Course
Urinary System, part 2: Crash Course A&P
As we promised last week, we're not quite done talking about your pee yet. Today Hank explains how the urinary system regulates the production of urine, by maintaining a study glomerular flow rate. He'll also cover the anatomy of storing...
TED-Ed
TED-Ed: How do your kidneys work? - Emma Bryce
After drinking a few glasses of water on a hot day, you might be struck with a sudden urge. Behind that feeling are two bean-shaped organs that work as fine-tuned internal sensors. Emma Bryce details how the incredible kidneys balance...
SciShow
Science to Watch Poolside: A Swimming Summer Compilation
Summer is coming to a close, but there is still time to take a cool, refreshing dip in the water of your choice. Before you do, be sure to check out this swimming compilation to get answers to all the questions you didn’t even know you...
SciShow
8 Survival Myths That Will Definitely Make Things Worse
You might think you know how to survive if you end up stranded in the wild, but those tips you read on the internet might just make things worse! Some tips seem too good to be true, and they are. Others are ingrained enough to be common...
SciShow
What Does My Pee Say About Me?
The pee you just flushed without thinking could be a great sample to know what is going on in your body!
SciShow
Why Is My Pee Green?
How worried should you be when your urine isn't yellow, but instead it's green, red, or even black?
SciShow
You, a Dog, and an Elephant All Pee for 21 Seconds
The time it takes to you to tinkle is probably about the same as an elephant, even though an elephant's bladder is over 100 times larger. How can that be right? The answer is a combination of physiology and fluid dynamics.
SciShow
The Truth About Cranberry and UTIs
If you have had a UTI before, maybe you've tried some cranberry juice or cranberry pills to ease the symptoms. Your mom suggested it, or even your doctor prescribed it, so it should work, right? But do you really know why cranberries are...
Be Smart
Do Fish Pee?
You know you’ve wondered. Do fish actually pee? And what does that make the ocean… one big toilet?
SciShow
What Happens If You Go Without Water?
Ever wondered what happens to your body if you don't get enough water? Our bodies are mostly water by weight, so in today's episode of SciShow Hank explains what happens to your body as it starts to shut down when you go without that...
SciShow
6 Everyday Ways Science Protects You from Your Poop
It's easy to take waste disposal for granted, so here are six ways modern technology has made your poop safer and less... gross. Chapters S-BEND (TRAP) 1:15 TOILET SPRAY 2:33 TOILET LIDS 3:49 CHEMICAL TOILETS 5:35 VACUUM TOILETS 7:14...
SciShow
Why Does Beer Make You Pee?
Beer goes in, pee comes out. It's a simple equation, right? In today's SciShow Quick Questions, Hank goes a little deeper to find out why beer makes you pee!
SciShow
What Happens When You Hold Your Pee?
Can holding your pee be bad for you? Learn about your bladder in this Quick Question with Michael Aranda!
Bozeman Science
Osmoregulation
Paul Andersen explains how organisms regulate their internal osmolarity or not. He starts with a brief description of osmosis and why it is important for animal cell to be surrounded by an isotonic solution. He then explains how...
Crash Course
The Excretory System: From Your Heart to the Toilet - CrashCourse Biology
Hank takes us on the fascinating journey through our excretory system to learn how our kidneys make pee.
SciShow
What Happens After You Flush?
Humans have always peed and pooped, but where it goes after we’ve done our business has changed a lot. In fact: The water you just drank may well have been a part of someone’s urine just weeks ago! SciShow explains!
Crash Course Kids
Water Fix!
How can we fix water shortages? Well, we know that shortages are a problem and can cause fighting because water is a resource. When you limit a resource, things get scary. But, in this episode of Crash Course Kids, Sabrina talks about...
TED-Ed
TED-Ed: What causes kidney stones? - Arash Shadman
The biggest kidney stone on record weighed more than a kilogram and was 17 centimeters in diameter. The patient didn't actually swallow a stone the size of a coconut; kidney stones form inside the body. So how do they grow in the first...
SciShow Kids
Why Can’t We Drink the Ocean?
There's so much water in the ocean, but why can't we drink it? Jessi and Squeaks talk about the difference between ocean water and the water you drink at home.
Crash Course
What Is Organic Chemistry - Crash Course Organic Chemistry
Organic chemistry is pretty much everywhere! In this episode of Crash Course Organic Chemistry, we’re talking about the amazing diversity among organic molecules. We’ll learn about the origins of organic chemistry, how to write Lewis...
SciShow
What Really Happened with Typhoid Mary
The famous symptomless carrier of Typhoid Fever, Mary Mallon, never felt the effects of the fever, but never recovered from a medical system that didn’t know how to treat a carrier of the disease.
SciShow
Is Urine Really Sterile
Despite what you might've seen on some wilderness-survival show, there's increasing evidence that your pee isn't sterile. So don't do anything crazy with it. Sci Show explains!