Bozeman Science
Homeostasis Hugs
Paul Andersen explains how hugs between tissues can help maintain homeostasis. Countercurrent heat exchange allows heat to stay within the core of the body. Close contacts between the capillaries and alveoli allow our body to maintain...
SciShow
Neurology, Pharmacology, & Poultry | SciShow Talk Show
Dr. Genevieve Lind explains how she uses frog eggs to learn how drugs affect receptors in the brain and Jessi's chicken Goldie shows us one use for the cloaca.
SciShow
Why Crocodiles Have an Extra Hole in their Heart
Crocodiles have four-chambered hearts, just like we do! But, while our hearts do just fine with four valves, they have a slightly different approach…
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!
Crash Course
Blood Vessels, part 2: Crash Course A&P
And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become "high", and what that means for our health. One of the more interesting points is that your body has ways of dealing with...
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
Why Is Salt So Bad for You, Anyway?
You've probably been told that eating too much salt is bad for you, especially if you have high blood pressure. But what exactly does salt do to our bodies that can make it so hard on our hearts?
SciShow
Can Danger Give You Super Strength?
Have you ever heard that you become more powerful in life-or-death situations? There are a lot of anecdotes about super strength, but is it a real thing?
SciShow
What Causes Morning Sickness?
If you've ever been pregnant, or been around a pregnant lady, you know that the agony that is morning sickness -- and it's not just something that happens in the morning! SciShow explains the many theories about what causes it.
SciShow
6 Popular "Home Remedies" That Don't Actually Work
Studies have found that even some of the most well-known home remedies don’t work, and sometimes they do more harm than good. Chapters HONEY FOR ALLERGIES BUTTER ON THERMAL BURNS 2:15 VINEGAR FOR HEAD LICE 4:42 4 IPECAC FOR POISONING...
SciShow
Why Do Our Bones Make Our Blood?
Our bones are multi-functional body builders, but perhaps their most mysterious function is the production of blood. Scientists now think they have a pretty good idea why this is where our blood gets made.
SciShow
The Wild Reasons Many Older People Wake Up So Early
You might think your grandma who wakes up at 4am just needs less sleep than younger people. Not so! Studies suggest there are some bizarre reasons older people rise at the crack of dawn, including something called brain sand!
SciShow
How Do Marine Mammals Hold Their Breath For So Long?
How is it possible for air-breathing marine mammals like sperm whales and elephant seals to hold their breath for so long?
TED-Ed
TED-Ed: How do vitamins work? - Ginnie Trinh Nguyen
Vitamins are the building blocks that keep our bodies running; they help build muscle and bone, capture energy, heal wounds and more. But if our body doesn't create vitamins, how do they get into our system? Ginnie Trinh Nguyen describes...
SciShow Kids
Why Do We Get Nosebleeds?
Jessi got a nose bleed while playing outside. In order to make it less scary, Jessi and Squeaks explain why they happen, and how to take care of them.
Crash Course
Lymphatic System: Crash Course A&P
Today Hank explains your unsung lymphatic system and how it supports cardiovascular function by collecting, filtering, and returning interstitial fluid back into the bloodstream via a system of lymphatic vessels. He also explains the...
SciShow
Can You Really Be Scared to Death?
Can you literally "die of fright?" Turns out, you can! In this episode of SciShow Hank explores the mechanisms in your body that activate when you get scared, and how they can sometimes get out of hand.
SciShow
Why Do Newborn Babies Get Jaundice?
Learn why jaundiced babies have yellowish skin and eyes for the first few days after they're born and how the ancient Greeks thought birds could help cure the affliction (spoiler: they were super wrong).
SciShow
How Is That Not Killing You?
When Hank watches nature documentaries he always comes away with one big question: how is that not killing you? In today's episode of SciShow he looks at three unusual ways that animals manage not to get killed by nature.
Bozeman Science
Transport Across Cell Membranes
Paul Andersen describes how cells move materials across the cell membrane. All movement can be classified as passive or active. Passive transport, like diffusion, requires no energy as particles move along their gradient. Active...
SciShow
Can We Keep Neurons Active…with Algae?
Cyanobacteria and other microbes produce a lot of oxygen. What if we could use that oxygen to power our brains?
SciShow
Why Do I Feel Lightheaded When I Stand Up?
Have you ever stood up and felt a bit dizzy and lightheaded? Learn why it happens in this SciShow Quick Question!
SciShow
Why Do I Get Dark Circles Under My Eyes?
Look alive, you! Today we’re diving into the science behind dark circles under your eyes, and all the things that might cause them – tiredness included.
TED-Ed
TED-Ed: How high altitude affects your body | Andrew Lovering
If you teleported from sea level to the top of Mount Everest, things would go bad fast. At an altitude of 8,848 meters, you would likely suffocate in minutes. However, for people that make this journey over the course of a month, it's...