Back in the day, bacterial diseases like dysentery were super deadly, but the nomadic people in northern Africa had long known about an effective, if hard to swallow, cure.

You're probably aware of lots of the things we take from animals, but for centuries, humans have been sneaking animal secretions into a bunch of things you probably didn't know about, like your Easter candy, your Mom's perfume, and even...

One of the toughest materials known to science is made not by humans, but by nature... and it's inside of oysters.

Hard-to-reach places, like the Amazon rainforest, can hide traces of past civilizations. But scientists are finding ways to explore these areas from above and discover the effects these ancient peoples had on their environment.

Hank goes over some of the more interesting ways that doctors can use to tell what might be wrong with you.

Some animals live in pretty extreme places, but the lava cricket might be the most hardcore of them all. These crickets have only been observed right after volcanic eruptions, and scientists have questions, like “How does a flightless...

Gym teacher Hank gives us the full story of the past, present, and future of birth control.

Mistletoe's ability to stay green through harsh, cold weather has made it a symbol of holiday romance for centuries. But it relies on some very strange (and occasionally disgusting) adaptations to stay vibrant and healthy all winter long.

Did you know that some species take care of young that are not their own? This surprising practice is called alloparenting, and it’s been observed in animals from otters, like Rosa and Selka, to birds to baboons!

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.

Our various secretions - from tears to earwax - can tell us more about our bodies than you might think!

If a tree falls into the forest and doesn't decompose, what happens to it?

Hank examines the zoological definition of monogamy, as well as some other breeding strategies that animals use.

Why NASA Uses Satellites and Airplanes to Study Frogs

Having bacteria in your food doesn't really sound great, but you couldn't have yogurt without it! Learn why in this week's QQ!

Some days you look in the mirror and find a long dark hair where it didn't use to be. Maybe you're going through puberty, pregnancy, or menopause. Maybe you're not. But either way, that hair didn't appear out of nowhere. It just went...

This week's SciShow news has Hank bringing us a primer on the science behind various illegal and illicit ways in which athletes "improve" their bodies, proof of general relativity that we can actually see, and a new way to measure how...

Can having Herpes actually have benefits? While herpes viruses cause harmful or annoying afflictions like chickenpox and cold sores, there’s also evidence it can help your immune system fight unrelated attackers. Join Olivia Gordon for a...

Table saws, while quite useful for woodworking, are also dangerous machines, which is why some incredible safety mechanisms have been invented to help you remain one with your body parts. Hosted by: Stefan Chin

Roots do more than hold plants in place -- they hold the planet in place. They're an important defense against drought and climate change, and of course, our actions are changing them.

Bdelloid rotifers have a superpower. If their DNA is shredded to pieces, whether from a lack of water or a blast of radiation, they can put it back together. Hosted by: Hank Green

Have you ever wondered what dinosaur meat might have tasted like? Chances are you've eaten dinosaur more recently than you might expect.

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

While you unwrap that luscious truffle, let Hank explain the science of chocolate -- where it comes from, what its active ingredient is, and how it works. Also learn the difference between chocolate, cocoa, cacao and coca, so you really...