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...

Could we one day live on Mars? Reid Reimers explains Mars One could help colonize the red planet.

Hank explains the scientific reasons behind why we humans generally prefer to eat donut hamburgers to carrots.

By giving some fossils a dental exam, we've learned more about how tusks first evolved. And humans aren't the only primate that can get down at karaoke night.

This week, scientists revealed a sample of amber containing an extinct tick that fed on dinosaurs. Unfortunately, we can't take a blood sample from it and make Jurassic Park a reality, but it can still tell us a lot about how dinosaurs...

Living in a city means accepting a certain level of dysfunction: long commutes, noisy streets, underutilized spaces. Carlos Moreno wants to change that. He makes the case for the "15-minute city," where inhabitants have access to all the...

Frogs falling victim in the past to one of the biggest destroyers of biodiversity didn’t have much hope, that is, until humans thought to get a bird’s eye view.

Different dogs look incredibly different - but that doesn't mean they are necessarily more diverse.

For decades scientists believed that monkeys could not speak human language due to an anatomical difference in vocal tracts. Today, we're not so sure that this is the limiting factor after all.

Aliens - Are We Looking in the Wrong Place?

Astringent plant chemicals called tannins bind proteins on mucous membrane and skin, generating a prickly, puckery mouthfeel from foods and letting us “tan” skins into...

Designer Tea uglow is creating a future in which humanity's love for natural solutions and simple tools can coexist with our need for information and the devices that provide us with it. "Reality is richer than screens," she says. "We...

From the glorious crested guinea fowl to the adulterous African jacana to vultures that can pick a zebra carcass clean in 30 minutes, Washington Wachira wants us all to get to know the marvelous species of birds that share the planet...

In a few million years, we’re going to have to leave Earth if we want to survive. But how long can we actually outrun extinction before the universe becomes uninhabitable to us?

Our new evolution simulator reveals that extinction often happens when conditions change quickly.

A new strain of bird flu has been detected in North American birds for the first time in seven years. And U.S. President Biden is temporarily lifting the country's summertime ban on E15 gasoline.

Christopher McDougall explores the mysteries of the human desire to run. How did running help early humans survive -- and what urges from our ancient ancestors spur us on today? McDougall tells the story of the marathoner with a heart of...

Meet Todai Robot, an AI project that performed in the top 20 percent of students on the entrance exam for the university of Tokyo -- without actually understanding a thing. While it's not matriculating anytime soon, Todai Robot's success...