We tend to think of COVID-19 as a lung infection, but there's more evidence that it might also be affecting the hearts of healthy athletes without them even knowing it.

Art Woods introduces us to Antartica's enormous sea spiders and Jessi from Animal Wonders brings in Fluffy the Chilean Rose Tarantula, a surprisingly big land spider.

Hank tells us of a fascinating new experiment in synthetic biology - scientists have created a jellyfish out of silicone and rat heart cells.

Why do we faint? Because sometimes, your nervous system just doesn't know what to do with itself.

October 11, 2017 is National Fossil Day! Kallie Moore, the collections manager at UM’s Paleontology Center, talks to Hank today about why fossils are important, and how you can get involved in this national holiday! (Psst. at 12:20,...

Drugs that treat heart failure are also prescribed for anxiety? What's up with that?

Performance poet (and math student) Harry Baker spins a love poem about his favorite kind of numbers -- the lonely, love-lorn prime. Stay on for two more lively, inspiring poems from this charming performer.

Dean Ornish shares new research that shows how adopting healthy lifestyle habits can affect a person at a genetic level. For instance, he says, when you live healthier, eat better, exercise, and love more, your brain cells actually...

Dean Ornish talks about simple, low-tech and low-cost ways to take advantage of the body's natural desire to heal itself.

Surgeon and inventor Catherine Mohr tours the history of surgery (and its pre-painkiller, pre-antiseptic past), then demos some of the newest tools for surgery through tiny incisions, performed using nimble robot hands. Fascinating --...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. In this passionate talk, Eve Ensler declares that there is a girl cell in us all -- a cell that we have all been...

When you were a kid, did anyone ever tell you that your head would explode if you hung upside down for too long? Well... they might have been on to something.

If you’re someone who is constantly coughing up mucus, you might not actually have allergies. There’s a possibility that your organs are flipped and you don’t even know it!

Join the Amoeba Sisters in their introduction to the circulatory system and follow the pathway of blood as it travels through the heart! This video explains the importance of blood, arteries, and veins, and it also introduces basic heart...

Educator Roy Gould and researcher Curtis Wong show a sneak preview of Microsoft's WorldWide Telescope, which compiles images from telescopes and satellites to build a comprehensive, interactive view of our universe.

The same enzyme that used to save us is now killing us because the body reactions it catalyzes now cause more harm than good.

Our hard-wired stress response is designed to give us the quick burst of heightened alertness and energy needed to perform our best. But stress isn't all good. When activated too long or too often, stress can damage virtually every part...

Every doctor makes mistakes. But, says physician Brian Goldman, medicine's culture of denial (and shame) keeps doctors from ever talking about those mistakes, or using them to learn and improve. Telling stories from his own long...

In the cathedral of the wild, we get to see the best parts of ourselves reflected back to us. Boyd Varty, a wildlife activist, shares stories of animals, humans and their interrelatedness, or "ubuntu" -- defined as, "I am, because of...

Khadija Gbla grew up caught between two definitions of what it means to be an “empowered woman.” While her Sierra Leonean mother thought that circumsizing her — and thus stifling her sexual urges — was the ultimate form of empowerment,...

When outbreaks happen, we need to be able to predict the course they’ll take in the future, but of course we can’t run experiments on real people to figure that out. Thankfully we can simulate outbreaks and use models to find out how...

It starts with a sketch. Then it evolves into a larger-than-life visual masterpiece, a celebration of human connection. Follow along as legendary artist and designer Es Devlin takes us on a visual tour of her work -- including iconic...

Emotions are really complicated and interesting, which is why we’ve talked about them a lot here on SciShow Psych. In fact, we’ve talked about them so much that we’ve made a compilation of our favorite emotion-related videos!

Abigail Washburn wanted to be a lawyer improving US-China relations -- until she picked up a banjo. The TED Fellow tells a moving story of the connections she's formed touring across the US and China while playing that banjo and singing...