There's a town in northern Mexico called Ojuela that's got a rich history of valuable mining industry, but nowadays is largely deserted. But it's getting a new, second life thanks to a type of mineral forming process fittingly called...

In this SciShow Kids compilation, Jessi and the gang learn about axolotls, poison dart frogs, and an amphibian with a boomerang-shaped head. <br/>

Axolotls are amazing pets! Join Jessi and Squeaks as they learn about why axolotls have feathery gills and live in water, and how to protect their natural habitat.



First Grade Next Generation Science...

In order to understand where hearts came from, we have to go back to the earliest common ancestor of everything that has a heart. It took hundreds of millions of years, and countless different iterations of the same basic structure to...

How do they do it? Penguins standing on ice, not only for days, but their whole lives! And their feet don’t hurt like ours would. It has something to do with blood and an amazing twist that penguins have developed.

Usually, the 160,000 kilometers of blood vessels in your body work incredibly smoothly. However, the forces of age, weight gain, and gravity can conspire to cause lumpy varicose veins.

Most fish are pretty sluggish in the cold. But the Pacific bluefin tuna is one of the fastest apex predators in the frigid Pacific ocean. Their physiology has adapted to help them retain more of the heat their bodies produce, except when...

What color is your blood. Red, right? Well, actually, yes. So why does it look blue when you see it through your skin? And is everyone's blood always the same color red (spoiler: no)? Do all animals have red blood ('nother spoiler: no!)?...

Muscles and joints shift and jostle. The heart's pounding rhythm speeds up. Blood roars through arteries and veins. Over the course of a pregnancy, every organ in the body changes. Initiated by a range of hormones, these changes begin as...

Onstage at TED2012, Jack Choi demonstrates a powerful tool for training medical students: a stretcher-sized multi-touch screen of the human body that lets you explore, dissect and understand the body's parts and systems.

In a very, very early-morning set, They Might Be Giants rock TED2007, playing "Older," "Bee of the Bird of the Moth," "Asbury Park," "Fingertips," and "The Alphabet of Nations." Plus they take phone calls from the dead.

Join the Amoeba Sisters in their introduction to the circulatory system and follow the pathway of blood as it travels through the heart! This video explains the importance of blood, arteries, and veins, and it also introduces basic heart...

Now that we've discussed blood, we're beginning our look at how it gets around your body. Today Hank explains your blood vessels and their basic three-layer structure of your blood vessels. We're also going over how those...

Rice production needs to see a 50% increase by 2030 to keep up with population growth, but as the climate warms, rice plants will likely become less efficient. Fortunately, scientists are working on a pretty clever potential solution.

Paul Andersen shows you how to find stomata in a dicot and monocot leaf using finger nail polish and transparent tape. A microscope is required to actually see the stomata.

Your heart gets a lot of attention from poets, songwriters, and storytellers, but today Hank's gonna tell you how it really works. The heart's ventricles, atria, and valves create a pump that maintains both high and low pressure to...

Hank takes us on a trip around the body - we follow the circulatory and respiratory systems as they deliver oxygen and remove carbon dioxide from cells, and help make it possible for our bodies to function.

Paul Andersen explains how nutrients and water are transported in plants. He begins with a brief discussion of what nutrients are required by plants and where they get them. He shows you dermal, vascular and ground tissue in monocot...

Howcast - Learn what to look for in a red hair dye from Pierre Michel Salon colorist AJ Lordet in this Howcast hair tutorial.

Howcast - Learn how to make chocolate leaves in this Howcast food video featuring pastry chef Katie Rosenhouse.

Varicose veins, a common condition characterized by dilated veins and pooling of blood in the lower extremities, can be unsightly and painful. In the past, treatment involved major surgery and weeks of recovery. However, with the...

The circulatory system is a vast, complex network of blood vessels that serve as highways for transporting blood which contains life-sustaining molecules, such as nutrients, gasses, hormones and waste products, to the various organs of...

Experts use veins to draw blood for blood testing, blood donation, and more because the structure and position of veins make it easier to draw blood out of as compared to arteries. It may also be dangerous to draw blood from arteries.

Sitting for long periods can cause blood clots due to impeded flow of blood. Sitting without moving much can cause the blood to clot according to the effects of gravity. This doesn’t happen during sleep since we do move our bodies during...