When you get two doses of a vaccine, you might assume that it doesn't matter which arm gets the shots. But some evidence suggests that it does.

Luckily, we live in a time where we don't have to worry about smallpox anymore. It's a horrible disease, but through smart vaccination techniques, we took it from killing millions worldwide, to being eradicated from the planet!

Wheezy Waiter announces the SciShow nominees for "Worst Science in a Film," & Hank talks about the bird flu and shares two sounds that had never been heard by human ears until very recently.

Fewer children in the United States are getting vaccinated. That’s bad news for those kids, and also for public health in general. Often, the response is to argue and debate and get angry at people who are we see as making terrible,...

What killed George Washington? Turns out it was probably related to the bloodletting and other 18th-century medicine his doctors applied.

New variants of SARS-CoV-2 have emerged throughout the COVID-19 pandemic, with the latest one being Omicron. We’re still trying to learn about its effects and what it means for the overall course of the pandemic, but here’s what we know...

We here at SciShow know of two things that can help you get through this flu season: a flu shot, and watching this video. Make sure you do both! Hosted by: Hank Green

For most of human history, we have sought to treat and cure diseases. But only in recent decades did it become possible to ensure that a particular disease never threatens humanity again. Julie Garon and Walter A. Orenstein detail how...

Several COVID-19 variants are acting uniquely enough to qualify as a distinct strain. And you might have heard about one on the news: the Delta variant. Today we’re going to talk about what it is, why it’s here, and what you need to know...

We here at SciShow know of two things that can help you get through this flu season: a flu shot, and watching this video. Make sure you do both!

In today's news, Michael Aranda stands in for Hank to talk about this year's flu season. <br/>
And no, Hank isn't out sick with the flu - he's on the road and out of the studio for a few weeks!

New variants of SARS-CoV-2 have emerged throughout the COVID-19 pandemic, with the latest one being Omicron. We’re still trying to learn about its effects and what it means for the overall course of the pandemic, but here’s what we know...

Jessi is about to go to the doctor's to get a vaccine and she's sort of nervous. But she knows that vaccines are really important, so she learned all about how they help us stay healthy! Now she wants to share what she learned with you!

Today we are talking about 3 scientists who, through their collective inventions and discoveries, have saved millions of lives.

Vaccines save millions of lives each year, so we owe a lot to the people that pioneered that medical breakthrough. But the concept of a vaccine had already existed for a long time before it was “discovered,” and the real story is way...

Luckily, we live in a time where we don't have to worry about smallpox anymore. It's a horrible disease, but through smart vaccination techniques, we took it from killing millions worldwide, to being eradicated from the planet!

For 10,000 years, humanity suffered from the scourge of smallpox. The virus killed almost a third of its victims within two weeks and left survivors horribly scarred. But Simona Zompi commends the brave souls - a Buddhist nun, a boy, a...

Part four of our six-part series on vaccinations, supported by the National Institute for Health Care Management Foundation. It turns out, people have been resistant to the idea of vaccines pretty much since vaccines were invented. This...

We're very clearly in favor of vaccines here at Healthcare Triage, because they save a LOT of lives. It turns out, the measles vaccine was doing more than we previously thought. Getting infected with measles doesn't only make you sick,...

Howcast - Learn everything you need to know about vaccinations from parenting coach Tammy Gold in this Howcast baby care video.

How the contagious and lethal smallpox virus was finally eradicated - 150 years after the first chance to prevent a global outbreak was missed. Biology - Cells And DNA - Learning Points. Smallpox is an acute, contagious disease - one of...

Vaccines mean that there are now very few new polio cases, but in the early 1900s this wasn't the case. Learn how two scientists, Salk and Sabin, virtually wiped out this potentially deadly disease. Biology - Healthy Living - Polio is a...

Galileo is a new satellite navigation system developed by the European Union as a non-military alternative to GPS. Galileo aims to provide highly accurate positioning and navigation services to the public. It offers greater reliability...

The day has finally come: We have covid vaccines for kids under five. There are lots of questions and a few concerns. Let’s address them! <br/>