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.

If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?

If you lost your arm almost immediately after being vaccinated, would you still be vaccinated?

High elevations can be a problem for humans. Since the air is thinner, you get less oxygen with every breath, leading to all kinds of negative side effects. But there are millions of people around the world who spend their whole lives at...

Humans (and our pets) frequently instinctively stretch as soon as we wake up. But why? What is happening in our bodies when we stretch and yawn to wake ourselves up?

In the United Kingdom just days ago, the attitude toward the novel coronavirus pandemic was “keep calm and carry on.” Now, however, the stakes are higher -- and the national feeling more grim. Prime Minister Boris Johnson has ordered...

The SciShow Science News Bureau brings us some GOOD news this week - Hank tells us about a newly developed vaccine for dengue fever, a newly discovered monkey species in the Democratic Republic of the Congo, and some happy pigs drinking...

A world only 2°C warmer, or 3.6°F, would be one that is much different than the world we live in today, but what does that actually look like?

If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?

Jacek Utko is an extraordinary Polish newspaper designer whose redesigns for papers in Eastern Europe not only win awards, but increase circulation by up to 100%. Can good design save the newspaper? It just might.

When you were a kid, did anyone ever tell you that your head would explode if you hung upside down for too long? Well... they might have been on to something.

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...

In March 2020, the COVID-19 pandemic rocked economies worldwide. Millions of people lost their jobs, and many businesses struggled to survive or shut down. Governments responded with some of the largest economic relief packages in...

You may be aware of certain hacks to sober up, but researchers have found a way to actually get booze out of our systems faster. And this discovery could help first responders when facing alcohol overdoses.

Today, we're going to take a closer look at how the oceans circulate by following the life of a discarded water bottle as it gets snagged in the North Pacific Garbage Patch. We'll talk about what causes the movement of water, called...

Humans (and our pets) frequently instinctively stretch as soon as we wake up. But why? What is happening in our bodies when we stretch and yawn to wake ourselves up?

You've probably been told that eating too much salt is bad for you, especially if you have high blood pressure. But what exactly does salt do to our bodies that can make it so hard on our hearts?

Rocks are more than just rocks, they're the key to Earth's history!

The value of money is determined by how much (or how little) of it is in circulation. But who makes that decision, and how does their choice affect the economy at large? Doug Levinson takes a trip into the United States Federal Reserve,...

The idea of putting blood into a person was a radical one when it was first attempted 350 years ago, but today, more than 15 million pints of blood are donated each year in the U.S. to be used in transfusions to over 5 million patients. ...

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.

How Much Blood Does the Heart Pump?

Howcast - Tingling or cold feet or hands, bluish skin, and cuts or wounds that take a long time to heal are all indicative of circulatory problems. If you suffer from any of these symptoms, there are steps you can take to improve your...

Howcast - Learn how to reduce cellulite using coffee grounds from licensed esthetician Joanna Vargas in this Howcast video.