During long, cold winters in medieval Europe, church organs grew gray, sickly-looking circles that spread over their pipes. People back then believed that this was the work of the devil, but as it turns out, it’s just some pretty simple...

Hank has some thoughts on the news that several Italian scientists who were convicted of 29 counts manslaughter for making an "inadequate risk-assessment" before an earthquake.

Bananas! They’ve got a long trip from harvest to table, and a lot of science goes into keeping them delicious. This episode was produced in collaboration with and sponsored by Emerson.

Gluten is a sticky protein composite found in cereal grains. Hank gives us some insight into the importance of gluten in history, as well as its impact on health in our own time.

Photosynthesis, the elegant process of making fuel from sunlight, might be the future of how we power, well, just about anything. Plants may have invented it, but humans are taking the model and really running with it, to make anything...

Hank shares some developments in cancer research, from new insights into the behavior of zombie cancer cells, to a new method that uses nanotechnology to kill cancer from within.

For years, catch-and-release anglers have been pouring soda on bleeding fish in an effort to help save their lives. But.. does this actually work?

Thanks to LastPass for sponsoring this video. Check out LastPass hereref='http://bit.ly/2GbcEci' target='_blank' rel='nofollow'>here Fusion power is supposed to save us from fossil fuels, so when is nuclear fusion going to be a...

Despite some bold claims, most supplements can’t really "boost" your metabolism, and the actual changes we can make to it are pretty limited.

Hank and PhD candidate Casey Massena go deep into the chemistry of a molecule that Casey helped create! Then Jessi joins the show to show off Ecuador, one of her many conures!

Scurvy isn't just a silly word used by pirates- it's actually a serious disease caused by a lack of Vitamin C that still occurs today! But did you know that our distant ancestors could make their own Vitamin C, making it impossible to...

Musty, with hints of vanilla, coffee, and maybe fresh cut grass-- why do old books smell the best?

Hank describes some of the best explanations that neurologists have come up with to account for the strange sensation we know as déjà vu.

It may produce creepy images with way too many dogs and eyeballs, but Google’s DeepDream program is actually a valuable window into artificial intelligence.

It might sound like a concept from science fiction, but artificial intelligence is already facilitating the development process behind some pharmaceuticals. Hosted by: Michael Aranda

The Five Stages of Grief show up in media everywhere from The Simpsons to Robot Chicken, but scientists have long been working on better ways to think about grief.

Chitons are constantly scraping their teeth on rocks to eat the algae off of them, but that means their teeth need to be pretty tough. And it turns out one species's teeth are the hardest, stiffest biominerals in any living thing we've...

Hank and PhD Candidate Joanna Kreitinger discuss research being performed on dendritic cells in relation to the immune system. Later, Jessi from Animal Wonders joins to show us the emperor scorpions.

You've seen your fruit get moldy, or maybe your bread products. Sometimes old meat gets a funky smell. But what is actually happening scientifically when your food goes bad? It's pretty interesting. Join Hank Green for a new episode of...

You've likely been seeing the rise of AI technology everywhere—and some people are pretty concerned about what it could mean for the future. But did you know it might hold the key to understanding, and even changing, parts of our...

Amazing scientific discoveries aren't always made by renowned scientists! Here's a few examples of times ordinary people unlocked some incredible discoveries! Let's' check it out!

The group of bacteria known as Chlamydiae doesn't do much to endear itself to us since these bacteria can cause a variety of illnesses. But it turns out that we may have Chlamydiae to thank for life as we know it!

Even before we knew what bacteria were capable of, we were using certain metals to help fight off their effects.. Hank Green explains how on this episode of SciShow. Hosted by: Hank Green

Geologists have a few ideas as to how rain affects mountains. But could rain also help mountains grow?