Is math real or simply something made up by mathematicians? You can't physically touch a number yet using numbers we're able to build skyscrapers and launch rockets into space. Mathematician Kelsey Houston-Edwards explains this...

The danger of artificial intelligence isn't that it's going to rebel against us, but that it's going to do exactly what we ask it to do, says AI researcher Janelle Shane. Sharing the weird, sometimes alarming antics of AI algorithms as...

From the spider in the corner of your house, to the moths in your attic, synanthropic species don't just live among us, they literally depend on us to live. Chapters View all synanthropic species 0:34 1 COMMON HOUSE SPIDERS 2:14 PURPLE...

How likely is a 21st-century epidemic of the plague? Unlike other diseases, the plague is alive and well in some parts of the world, but scientists and doctors are continuing to develop better treatments.

Can you feel the love tonight? Hopefully scientists can make this the case for the growing numbers of lions in animal sanctuaries.

Millions of images and videos are uploaded to the internet each day, yet we rarely see shocking and disturbing content in our social media feeds. Who's keeping the internet "clean" for us? In this eye-opening talk, documentarians Hans...

emily Parsons-Lord re-creates air from distinct moments in earth's history -- from the clean, fresh-tasting air of the Carboniferous period to the soda-water air of the Great Dying to the heavy, toxic air of the future we're creating. By...

Humans are great at understanding medium-sized things, like how far the supermarket is from your house, or how to find the bathroom in the dark. But imagining distances in light-years is a lot harder -- so you'll have to use a trick or two.

2019 will be a big year for the moon! Not only is it the 50th anniversary of the first moon landing, but our closest neighbor is receiving a bunch of new visitors this year.

Space physicist Miho Janvier studies solar storms: giant clouds of particles that escape from the Sun and can disrupt life on Earth (while also producing amazing auroras). How do you study the atmosphere on the Sun, which burns at...

They predate the dinosaurs and they outnumber us by trillions, yet you might not ever have the pleasure of seeing one. So let us introduce to you, the nematode.

In the fight against antibiotic-resistant bacteria, we might be able to find new treatments by looking at some of the world’s most venomous snakes.

Certain cognitive biases cause humans to make unsafe decisions in a pandemic, making a terrible disease even worse.

It's Thanksgiving in the US, so everyone's got turkey on the brain. And sure, turkeys are great, but there are lots of other cool birds that just don't get their due! So SciShow has put together a collection of episodes honoring some of...

If we could find one silver lining to the pandemic, it's that we have come one step closer to answering some of the questions about our feline friends.

Quick Questions gives you the low-down on how oysters turn a tiny bit of gunk into a lovely, valuable pearl.

You might think something is so "icky" that you try avoid it, and scientists think there's a reason humans, and even some other animals, do this.

In this explosive episode of SciShow Quiz Show, Hank Green and SciShow writer Dave Loos test their knowledge of diamonds, the environment, and the many reasons why humans are very strange creatures.

In ancient times, wildcats were fierce carnivorous hunters. And unlike dogs, who have undergone centuries of selective breeding, modern cats are genetically very similar to ancient cats. How did these solitary, fierce predators become...

After learning about mitosis and meiosis from our individual videos, explore the stages side by side in this split screen video by The Amoeba Sisters! Expand video details for table of contents. Vocabulary in this video includes...

Neil deGrasse Tyson was asked by the Templeton Foundation to answer the question "Does the Universe Have a Purpose". Then he read his answer aloud and I drew some pictures for it.

Most other mammals have penis bones, so why don't we?

Check out nine abundant animals that help support the food chain in their ecosystems!

Who hasn’t sent a text message saying “I’m on my way” when it wasn’t true or fudged the truth a touch in their online dating profile? But Jeff Hancock doesn’t believe that the anonymity of the internet encourages dishonesty. In fact, he...