There’s a lot of confusion over what organic means, and food with that label might not be as healthy or environmentally friendly as you think.

In the 1930s, a mistake that cost over a hundred lives helped usher in a new era of safer medicine.

Botox is a prescription drug best known for its cosmetic use, but its active ingredient is one of the deadliest biological substances known to mankind.

You might have heard that you should use a back-up method of protection if you’re taking birth control pills and antibiotics at the same time. Turns out, you might not have to worry about it.

In this video Paul Andersen defines adaptations and explains how organisms can become better adapted to their surroundings using the process of natural selection. Specific examples of adaptations, like coat color in rock pocket mice, as...

Are you a bit of a germaphobe? Maybe think twice about using antibacterial soap.

Antibiotics: behind the scenes, they enable much of modern medicine. We use them to cure infectious diseases, and to safely facilitate everything from surgery to chemotherapy to organ transplants. But we’ve stopped discovering new ones...

Slime can be great, but when it's the wrong kind of slime (you know, the kind that can kill you?), it gets added to the list of things Hank wishes he didn't have to worry about. Scientists call it biofilm, and it's a type of bacterial...

There’s no doubt that fish is a great source of protein in one’s diet. But the debate about whether fish farming or commercial fishing is worse for the environment continues and, as you might suspect, there isn’t a straightforward answer.

In the decades following World War II, life changed in many ways, and a fair number of those changes were for the better. Many of those improvements were driven by advances in science and technology, in fields like biology,...

In 1928, scientist Alexander Fleming returned to his lab and found something unexpected: a colony of mold growing on a Petri dish he’d forgotten to place in his incubator. And around this colony of mold was a zone completely and...

We have plenty of exciting news on holes in the earth and holes in your face! One of them broke records and the other keeps you healthy.

Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three taxonomic domains of life, and one of the four kingdoms: Archaea, Bacteria, and Protists. They are by far the most...

Antibiotics are one of the greatest medical innovations ever, responsible for saving something like a gazillion lives. But today, we're worried about overusing them, and there are concerns that one day they won't really work anymore....

A century ago, the top three causes of death were infectious diseases. More than half of all people dying in the United States died because of germs. Today, they account for a few percent of deaths at most.

We've been hearing a lot of pretty general plans to implement Medicare for all Americans. How would that work? Medicare as it exists today has some coverage gaps. How would that be addressed in Medicare for All?

More and more drug-resistant strains of Haemophilus influenzae type b bacteria (Hib) have emerged in recent years, and the consequences of late or no treatment are devastating. The microbe is estimated to cause at least 3 million cases...

Howcast - Learn all about the benefits of probiotics from registered dietician Glen Tobias in this Howcast video.

Howcast - Learn the top myths and facts about the STD gonorrhea (The Clap) from sexpert Jane Bogart in this Howcast video.

Howcast - Learn the treatment for the STD gonorrhea (The Clap) from sexpert Jane Bogart in this Howcast video.

Howcast - Learn how to treat colitis from gastroenterologist Lisa Ganjhu, M.D. in this Howcast video about stomach problems and digestive disorders.

Howcast - Learn how to prevent a breast infection, also known as mastitis, from lactation consultant Melissa K. Nagin in this Howcast video.

Allergies and atopic disease are on the rise. Especially food allergies in kids. A HUGE new study has looked at how changes to the microbiome can lead to allergies.

The gut microbiome, the community of microorganisms in our digestive tract, plays a surprising role in our mental resilience. The video explores the gut-brain connection and how gut bacteria influence our stress response. It also...