We've been using lab rats for over a hundred years, and they've been part of some of the biggest medical breakthroughs ever. But what comes next? From organs on a chip to computer simulations, here are some of the ways that science...

Your thyroid is a tiny gland in your throat, and what it lacks in size, it makes up for in power. This thing controls your metabolism, so you literally can't have power without it. And unfortunately, there's a lot that can go wrong...

In 1954, Joseph Murray attempted a type of kidney swap that no doctor had tried before. The surgery was a success, and the patient would go on to live with the transplanted organ thanks to one key factor: it came from his identical twin....

Explore the lymphatic system with the Amoeba Sisters! This introduction talks about lymph, the general way lymph travels in the lymphatic system, primary and secondary lymphoid organs and tissues, general functions of the lymphatic...

Paul Andersen explains how biology is ordered in the hierarchy of life. He first of all describes how emergent properties appear as you move to more inclusive systems. The then describes life at the following levels; atom, molecule,...

Scientists have recently discovered the cells responsible for a deer's amazing ability to regrow antlers in just a few months. It may be the key to healing human wounds and broken bones faster.

Organ transplants save lives, but they come with challenges: every minute a healthy donated organ is on ice increases risk. And even if things go perfectly, rejection of the organ is still possible. Cardiothoracic surgeon Abbas Ardehali...

Seventeen people in the US die /every day/ waiting for an organ transplant, usually a kidney. One approach is to grow extra kidneys in pigs, an idea known as xenotransplantation. We'll look at two recent milestones, as well as the...

When you're enjoying an intimate moment with that special someone, the peanut butter and jelly sandwich you ate for lunch is probably the last thing on your mind. But sexually transmitted allergens are a thing, and nut allergies aren't...

Dickinsonia might be the oldest known member of the animal kingdom, and the origin of birdsongs from the syrinx might be a little less mysterious.

Scientists have been trying to pull blood out of the body and put it back in again since the early 1800s, but bypass machines haven't been easy to get right.

From A positive to O negative, everyone's born with a blood type, and they're stuck with that blood type for their whole lives... or are they?

Today, the organ transplantation is one of the well-known medical treatment, but the road to the first successful organ transplant was full of challenges, discoveries, and a whole lot of work.

Hank talks about chimeras, and why Venus the cat probably isn't one - but your mom might be!

While it’s probably most famous for its role in gene editing, CRISPR does more than just that: its ability to precisely cut and alter DNA could lead to new antibiotics, faster diagnosis tools, and more.

Nobody agrees on how many organs you have, or the exact criteria for a cluster of cells to be called one. But as it turns out, simply identifying a part of the body as an organ can lead to medical breakthroughs.

Sandeep Jauhar, author of our January pick for the NewsHour-New York Times book club, Now Read This, joins Jeffrey Brown to answer reader questions on "Heart." Plus, Jeff announces the February book selection.

Pipe organs have a storied history throughout Western civilization, but demand for the king of instruments has seen a steady decline in recent decades. Special correspondent Fred de Sam Lazaro reports on one attempt to change that. It's...

A cat's bladder can only store a golf ball's worth of urine. For humans, it's a coffee mug and for elephants, a kitchen trash can. An elephant's bladder is 400 times the size of a cat's, but it doesn't take an elephant 400 times longer...

We’ve been studying the body for most of human history, and yet we are still finding new organs (or parts of them - depending on your definition). Also, thanks to some marmosets, we know a little more about how anxiety and depression...

How can we transplant animal tissue into humans? And will we ever be able to grow customized organs? SciShow explains!

While it’s probably most famous for its role in gene editing, CRISPR does more than just that: its ability to precisely cut and alter DNA could lead to new antibiotics, faster diagnosis tools, and more. Chapters CREATING ANTIBIOTICS 1:07...

Animals might be music lovers, but how can we know? Is the ability to perceive and appreciate music a shared human and animal experience?

When you think of a brain, you probably imagine that pink, wrinkly organ in your skull, but we don’t have to stop there! Neither the brain’s functions, nor its cells, are confined to the organ we normally think of as the brain.