If you've received a vaccine that's 95% effective, that does not mean you have a 5% chance of getting sick. That’s just not how the numbers are calculated. So let’s take a closer look at how it does work, why we can’t compare these...

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

Hank tells us about the Mayan calendar & why December 21, 2012 will not be the end of the world.

We've found a microbe that might someday protect us from malaria parasites, and bees might have help with their jobs soon, thanks to bubble pollination!

We know that lots of animals and plants can be found all over the world. But there's plenty that manage to live at the furthest points from each other they possibly can - and are /still/ the same species. It's called being bipolar, and...

When it comes to mass extinctions, you probably imagine giant volcanic eruptions or asteroids raining fire from the sky, but sometimes these events can have some unexpected causes. Hosted by: Michael Aranda

Are you slowly killing your car by using below average gas? Olivia talks about octane ratings and how your vehicle is designed to handle them. Hosted by: Olivia Gordon

Many of us rely on a morning cup of coffee, or several morning cups of coffee, to get us going. But climate change has the potential to shift not only where and how we grow coffee, but whether it can be grown at all. Hosted by: Hank Green

You would think that almost everyone has the same exact number of bones in their body, but that number is different, and changing, in everyone!

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.

Sometimes researchers make similar breakthroughs at similar times and that leads to great rivalries (think electricity). But what about the times that these researchers choose to collaborate? Hosted by: Hank Green (he/him)

Indigo may be a very vague and unnecessary color, but it has an interesting history that involves some plants, turmoil, and Isaac Newton's interest in the number seven. Hosted by: Hank Green

Near the end of 2020, we got some puzzling but good news: COVID-19 fatality rates have been dropping. Here are a few factors that might help explain why we’re seeing this trend.

Who runs the world? Political scientist Ian Bremmer argues it's not as simple as it used to be. With some eye-opening questions about the nature of leadership, he asks us to consider the impact of the evolving global order and our...

Earlier this month, a pandemic-era rule that allowed for the quick expulsion of migrants at the border, known as Title 42, officially ended. It created ripple effects on both sides of the border, though not necessarily what many...

School administrators and teachers are concerned about ongoing problems with student conduct that are disruptive and difficult to deal with. Several states are beginning to propose big changes about how to handle it. We hear from...

This is it! We're going out with a singing, dancing look at the Broadway Book Musical. Oklahoma! On the Town! Annie Get Your Gun! Also, just Annie! Today you'll learn about the development of the Broadway Book Musical in the late 19th...

Sure, sports are about athleticism -- but what actually keeps fans invested? Journalist Kate Fagan takes a fascinating deep-dive into lesser-known moments in women's sports history and its media coverage, revealing why stakes and...

Does success come from luck or skill, and how do you tell the difference? One way to find an answer: think like a pro gambler does, says football executive Rasmus Ankersen. Using sports analytics to emphasize his point, Ankersen digs...

Scientist Saad Bhamla is on a mission to answer a question most people don't think to ask: How do insects pee? Taking inspiration from the incredible "butt flickers" of the glassy-winged sharpshooter, Bhamla presents a fascinating study...

A few years ago, the king decided your life would be forfeit unless you tripled the gold coins in his treasury. Fortunately, a strange little man appeared and magically performed the feat. Unfortunately, you promised him your first-born...

Battles have erupted at schools, school boards and library meetings across the country as parents, lawmakers and advocacy groups are debating books. The American Library Association documented more than 1,200 demands to censor books and...

Rescue shelters are feeling pressure with too many potential pets and not enough people adopting them. Inflation has made owning and caring for a pet more expensive, leaving some owners struggling to afford rising costs. Deputy Senior...

U.S. Surgeon General Vivek Murthy is warning Americans of the prevalence of substance abuse and the risks of not addressing it. His new report describes the lethal impact and widespread scope of addiction. William Brangham speaks with...