In the 1970s, astronomers Carl Sagan and Frank Drake developed the first messages intentionally sent out of our solar system. But how do you describe yourself to beings who have no concept of life on Earth?

Why has there been so little mention of saving Black lives from the climate emergency? For too long, racial justice efforts have been distinguished from climate justice work, says David Lammy, Member of Parliament for Tottenham, England....

As long as we've been around, YES. But the universe gets much more exciting, AND much BRIGHTER, as we start winding our clocks back to the early days of the universe. Near the beginning of the universe, when space was rapidly expanding,...

At age 12, Freeman Hrabowski marched with Martin Luther King. Now he's president of the University of Maryland, Baltimore County (UMBC), where he works to create an environment that helps under-represented students -- specifically...

SciShow Space shares four wonderful things that you probably use every day, all made possible by NASA technology.

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences.

Around the world, black girls are being pushed out of schools because of policies that target them for...

"Where does it hurt?" It's a question that activist and educator Ruby Sales has traveled the US asking, looking deeply at the country's legacy of racism and searching for sources of healing. In this moving talk, she shares what she's...

Khadijah Tribble eloquently describes how marijuana reform is necessary to end the destructive war on drugs. Differential enforcement of marijuana drug laws have led to ongoing, systemic social and economic inequity. Tribble suggests...

From mice that battle scorpions to microscopic moss piglets that can survive a solar storm, here are 6 of Earth’s most hardcore beings!

This week on the SciShow Talk Show Ellen Whittle talks about her thesis research on bats and how they use artificial structures as roosts. Then Jessi from Animal Wonders joins the show with Carlos, the Sinaloan Milk...

Baratunde Thurston explores the phenomenon of white Americans calling the police on black Americans who have committed the crimes of ... eating, walking or generally "living while black." In this profound, thought-provoking and often...

It's hard to imagine Venice without the curious, banana-shaped gondolas that glide down the canals. How did these boats come to be the trademark transportation of Venice? Laura Morelli details the history of the gondola, explaining why...

You may have seen posts online warning you about the dangers of eating burnt toast, but how much will that actually affect your health?

Megan Toenyes, a former SciShow videomaker returns for a showdown with her former employer!

Researchers have an idea about how your lifestyle affects the way you see the dress, and we've identified a new ancestor to the dinosaurs!

Ukraine is on the front line of a war between freedom and tyranny, says chess grandmaster and human rights advocate Garry Kasparov. In this blistering call to action, he traces Vladimir Putin's rise to power and details his own path from...

When you see a black cat, you might think of witches and goth bands, but they're also a great example of a melanistic animal, and they're not the only ones! Chapters MELANISTIC ANIMAL 0:24 PYGMY GRASSHOPPERS 0:48 BLACK PANTHERS 1:53...

What does it take to build a national movement? In a captivating conversation with TEDWomen curator Pat Mitchell, Marian Wright Edelman reflects on her path to founding the Children's Defense Fund in 1973 -- from the early influence of...

You look really pretty, but what are you actually putting all over your face?

They're the second-largest fish in the world, they're almost extinct, and we know almost nothing about them. In this talk, Simon Berrow describes the fascinating basking shark ("great fish of the sun" in Irish), and the exceptional --...

In his home of Namibia, John Kasaona is working on an innovative way to protect endangered animal species: giving nearby villagers (including former poachers) responsibility for caring for the animals. And it's working.

Their signature black and white color scheme is part of what makes pandas instantly recognizable - but not many mammals are black and white, so... why do they look like that?

Have you ever wondered why leaves are green and not red, blue, or even black? We did too!

The subject of race can be very touchy. As finance executive Mellody Hobson says, it's a "conversational third rail." But, she says, that's exactly why we need to start talking about it. In this engaging, persuasive talk, Hobson makes...