We generally think of pregnancy as a continuous process, but scientists have recently discovered mechanisms that allow for certain mammals to put the development of a fetus on pause.

One team of researchers may has found a promising lead in the fight to cure or prevent Alzheimer's. And another team is helping us understand how Hydras regrow their heads. Hosted by: Hank Green

We began keeping goldfish as pets more than 1,000 years ago, but their beauty wasn’t the only thing they had going for them. Goldfish had a lot of really weird biological traits that made them incredibly resilient. And in an unfortunate...

Like a common cold or a cold sore, would it be possible to get a reinfection of COVID-19? Would we be able to build up long-term resistance to it?

In 2021, the FDA approved a treatment that claims to stop Alzheimer's at the source, removing the plaques in the brain long thought to cause the symptoms of the disease. But, as is often the case, things are more complicated than they...

It turns out life may have gotten its start pretty early in Earth's history, and while the first couple billion years saw several important developments, the period was still dominated by very simple life forms. This is our first...

Your brain does its best to inform you about the world around you, but sometimes it gets tricked. Enjoy eight optical illusions to test your brain’s sensory input.

When you think "parasite," you might think of leeches or some nasty tape worm, but there are some that can live inside your very own cells.

How is it that you can be looking at a distinct object in front of you, yet picture something entirely different in your mind? The inner workings of what’s happening in our brains to allow this is a puzzle that scientists are now...

People have been getting tattoos for thousands of years, but we've never quite been sure why the ink sticks around under our skin. A group of researchers now think they might have the answer. Plus, scientists are on the road to making...

Earlier this month, we talked with Daniel Skovronksy, the Chief Scientific Officer of Eli Lilly, about their colorfully-named COVID-19 treatments. We also discussed the challenges of mass-producing antibodies and how medicine might...

Animals have all kinds of adaptations to help them get through winter, from hibernation to boots and hats. But trees have to make it through the coldest months of the year alive, too, and they've developed some pretty extreme ways to do it!

Hank hates death, so he helps us understand the process of aging, informs us of how scientists are studying ways to prevent it and brings us the exciting news of current research in longevity... for mice.

Unlike with many other viruses, once you get a herpesvirus you’re stuck with it for life. But just how do these master trespassers accomplish this feat?

We've made some great strides in understanding the human genome, but before we can tackle genetic engineering, we have some "chicken and egg" problems to figure out. Hosted by: Hank Green

The answer to why wasabi is such a nose burner has to do with a compound that researchers are trying to use in a creative way! Hosted by: Stefan Chin

Those eerie shining orbs staring at you from the bushes when you take the trash out at night could be any number of animals, but why do their eyes glow like that? Hosted by: Michael Aranda

When camels drink, they do so at a rate that would kill most other animals. But where does all of that water go? Hint: It's not their humps!

Join the Amoeba Sisters on this introduction to the human Skeletal System! This video first introduces several types of skeletal systems found in different organisms before focusing on the human endoskeleton. Then, this video takes a...

What if we could use the power of DNA to create a sustainable, circular economy? In a talk about breakthrough science, synthetic biologist Jason W. Chin describes his team's work rewriting the genetic blueprint of cells to create a...

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...

In 1967, James Bedford had a plan to cheat death. He was the first person to be cryogenically frozen. This process promised to preserve his body until a theoretical future when humanity could cure any illness, and essentially, reverse...

New research suggests that cold weather may actually affect the human body's immune response, making us more susceptible to colds, flus and other upper respiratory infections. Dr. Benjamin Bleier, a sinus specialist at Mass Eye and Ear...

Paul Andersen emphasizes the importance of cooperation in living systems. He starts with a brief description of game theory and why countries at peace do better over the long term. He then explains how microscopic cells cooperate in the...