Unless you saw the spider bite you, that swollen, bite-looking lesion on your arm is probably something else, and blaming it on an innocent 8-legged critter might do more harm than good. Hosted by: Stefan Chin

What's the deal with that sharp pain in your side when you're trying to win that marathon? SciShow has the answers! Hosted by: Hank Green

Actor and activist Fehinti Balogun pieces together multiple complex issues -- climate change, colonialism, systemic racism -- in a talk that's part spoken-word poem, part diagnosis of entrenched global problems. Seeing the connections is...

You are constantly becoming a new person, says journalist Shankar Vendantam. In a talk full of beautiful storytelling, he explains the profound impact of something he calls the "illusion of continuity" -- the belief that our future...

An overview of what calculus is all about, with an emphasis on making it seem like something students could discover for themselves. The central example is that of rediscovering the formula for a circle's area, and how this is an...

The history of medicine is about two of our big questions: one, what is life? What makes it so special, so fragile, so… goopy!?

Two, how do we know what we know? Why should I take my doctor’s advice? Why are deep-fried Oreos bad...

In this episode of Crash Course Psychology, Hank walks us through the troubling world of Eating and Body Dysmorphic disorders. There's a lot going on here and, even though we still have a lot of dots to connect, a lot we can learn...

The first time you visit a new doctor, they’ll probably ask you about your family history - but it turns out that family history doesn’t tell you everything about the risks that can be hidden in your genes.

This week's SciShow news brings you discoveries involving two of the most exotic substances on Earth - the world's rarest element and the world's oldest water. Two great tastes that taste great together? Stay tuned to find out.

Dr. Who is one of the longest running TV shows on the BBC, and it's got a huge fandom surrounding it, called Whovians. And while it might not seem like, Whovianism, might just be religion! Whovians, like other passionate fan cultures,...

While doctors take an oath to do no harm, there's a good chance their unconscious biases can seep into how seriously they take your pain. Physician Sheetal DeCaria explains how perception impacts medical care and treatment -- and calls...

One potential avenue for cancer treatment uses electricity not from any outside machine, but from within our own bodies.

A husband and wife were in despair. The woman had just given birth to their 13th child, and the growing family was quickly running out of food and money. Wandering into the woods, the father encountered a skeletal figure with sunken eyes...

Over-the-counter pregnancy tests give potentially life-changing results with a pretty high rate of accuracy. But how do they work? Tien Nguyen explains how each test performs a scientifically rigorous, multi-stage experiment that goes...

Mantis shrimp might as well be super heroes, and one of their powers might given us insight on how to spot cancer.

Get the behind-the-scenes story from visual strategist Dan Goods about how a single question launched NASA's Jet Propulsion Lab into action at the beginning of the COVID-19 pandemic, propelling an unprecedented pivot from...

There's no shortage of resources to help people change their health behaviors -- but far too often, these resources aren't accessible in underserved communities, says physician Priscilla Pemu. Enter "culturally congruent coaching," a...

A new strain of the E. coli bacteria seems to have become resistant to most antibiotics. Let’s talk about how this possibly happened.

If a doctor has told you to quit smoking, that's not just because they're worried about lung cancer. Those cigarettes are messing up your body's natural healing process in more ways than one.

Although it may sound crazy, many doctors use maggots today to clean wounds of dead and infected tissue. This process, called debridement, is important for preventing the spread of infection in a world of increasing antibiotic...

Medical ethicist Harvey Fineberg shows us three paths forward for the ever-evolving human species: to stop evolving completely, to evolve naturally -- or to control the next steps of human evolution, using genetic modification, to make...

Bivalves—animals like mussels, clams and oysters—might be a more familiar sight in a restaurant than a lab. But it turns out that studying them might help us learn more about our own health.

A lot of people with coughs or fevers might be stressing out these days because they are worried that they have COVID-19. But with cold and flu season still in full swing, and the spring allergy season starting up (in the Northern...

More than 90 percent of children in the US see a doctor at least once a year, which means countless hours spent in waiting rooms for parents. What if those hours could be used for something productive -- like saving money? Through her...