A quantum computer isn't just a more powerful version of the computers we use today; it's something else entirely, based on emerging scientific understanding -- and more than a bit of uncertainty. Enter the quantum wonderland with TED...

What if you could know exactly how food or medication would impact your health -- before you put it in your body? Genomics researcher Jun Wang is working to develop digital doppelgangers for real people; they start with genetic code, but...

Hank is back in the studio and is very excited to be able again to share news of the universe with you, including his encounter with a giant squid, an English king discovered under a parking lot, new pyramids discovered in Africa, and...

Vision impairment is common in humans, so why not the rest of the animal kingdom?

Bacteria "talk" to each other, sending chemical information to coordinate attacks. What if we could listen to what they were saying? Nanophysicist Fatima AlZahra'a Alatraktchi invented a tool to spy on bacterial chatter and translate...

One hundred sixty years after the invention of the needle and syringe, we're still using them to deliver vaccines; it's time to evolve. Biomedical engineer Mark Kendall demos the Nanopatch, a one-centimeter-by-one-centimeter square...

Medical animator David Bolinsky presents 3 minutes of stunning animation that show the bustling life inside a cell.

Your heart beats more than 100,000 times a day. In just a minute, it pumps over five liters of blood throughout your body. But unlike skin and bones, the heart has a limited ability to repair itself. So if this organ is severely damaged,...

Babies are amazing, tiny humans. They’re so fascinating that we’ve done a lot of videos about them, so we’ve collected a bunch of our favorites here for you to enjoy!

Smallpox is the first and only human disease we've totally wiped out. However, thanks to breakthroughs made while eradicating smallpox and a number of other creative solutions , we've come really close to making a few more diseases a...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Moshe Szyf is a pioneer in the field of epigenetics, the study of how living things reprogram their genome in...

Most of us have experienced food poisoning, but with 31 unique species of bacteria, viruses, and parasites as common culprits, it's hard to know exactly what it is.

DNA isn't the only builder in the biological world -- there's also a mysterious bioelectric layer directing cells to work together to grow organs, systems and bodies, says biologist Michael Levin. Sharing unforgettable and...

As 18th-century science and medicine brought properties of electricity to light, some Victorian doctors decided that putting sick people in a bathtub and shocking them might be a good idea.

This week the FDA approves the first ever blood test for diagnosing concussions, and a group of scientists develop a neural network that could save you a trip to the eye doctor.

"It shouldn't be an act of feminism to know how your body works," says gynecologist and author Jen Gunter. In this revelatory talk, she explains how menstrual shame silences and represses -- and leads to the spread of harmful...

The world is getting closer to achieving one of the most important public health goals of our time: eradicating HIV. And to do this, we won't even have to cure the disease. We simply have to stop HIV from being transmitted until...

Even though doctors have been using general anesthesia for nearly 200 years, they haven’t really understood the details of how it temporarily shuts down your brain — until now.

We're all embedded in vast social networks of friends, family, co-workers and more. Nicholas Christakis tracks how a wide variety of traits -- from happiness to obesity -- can spread from person to person, showing how your location in...

Hank gives you the facts on stem cells - what they are, what they're good for, where they come from, and how they're used in medicine.

The year is 1400 BCE. At the temple of the fisherman, the morning is unusually still and this is just the latest in a series of troubling signs for Quexo, the village shaman. The villagers live off the sea, but this year the winds have...

Hank pays tribute to some of the great scientific minds we lost in 2012, and then apologizes for some mistakes made in recent SciShow episodes.

Explore how substances travel in diffusion with the Amoeba Sisters! This video uses a real life example and mentions concentration gradients, passive transport, facilitated diffusion, and explains why diffusion is critical for all...

It seems like the easiest way to avoid tiny parasites is to just slap on your animal’s tick or flea collar and hike into the woods worry-free. But you definitely shouldn’t.