SciShow
Can Your Cat Change Color?
Brown cats are something of a rarity, but you may have something pretty close.
TED Talks
Scott Kim: The art of puzzles
At the 2008 EG conference, famed puzzle designer Scott Kim takes us inside the puzzle-maker's frame of mind. Sampling his career's work, he introduces a few of the most popular types, and shares the fascinations that inspired some of his...
PBS
White Holes
Lurking in the depths of the mathematics of Einstein's general relativity is an object even stranger than the mysterious black hole. In fact it's the black hole's mirror twin, the white hole. Some even think that these could be the...
PBS
What Colors Were Dinosaurs?
We know a lot about dinosaurs but there's one question that has plagued paleontologists for decades: what color were they?
TED Talks
TED: When workers own companies, the economy is more resilient | Niki Okuk
Another economic reality is possible -- one that values community, sustainability and resiliency instead of profit by any means necessary. Niki Okuk shares her case for cooperative economics and a vision for how working-class people can...
Bozeman Science
Aposematic Coloration
Paul Andersen explains how aposematic coloration (or warning coloration) is used for protection in the natural world. He explains how bright colors can be caused by either sexual selection or a warning coloration to predators. He also...
TED-Ed
TED-ED: How do we know what color dinosaurs were? - Len Bloch
The microraptor was a four-winged carnivorous dinosaur with iridescent black feathers. But if our information about this dinosaur comes from fossils, how can we be certain about its color? Len Bloch shows how making sense of the evidence...
TED Talks
TED: How we wrecked the ocean | Jeremy Jackson
In this bracing talk, coral reef ecologist Jeremy Jackson lays out the shocking state of the ocean today: overfished, overheated, polluted, with indicators that things will get much worse. Astonishing photos and stats make the case.
Crash Course
Reconstruction and 1876 Crash Course US History
In which John Green teaches you about Reconstruction. After the divisive, destructive Civil War, Abraham Lincoln had a plan to reconcile the country and make it whole again. Then he got shot, Andrew Johnson took over, and the...
TED Talks
TED: Black life at the intersection of birth and death | Mwende "FreeQuency" Katwiwa
It is the artist's job to unearth stories that people try to bury with shovels of complacency and time, says poet and freedom fighter Mwende "FreeQuency" Katwiwa. Performing her poem "The Joys of Motherhood," Katwiwa explores the...
SciShow
5 Things That Make You a Mosquito Magnet
Every summer it seems like there’s that one person who always gets a lot of mosquito bites. But what makes people mosquito magnets?
MinutePhysics
Simpson's Paradox
This video is about Simpson's paradox, a statistical paradox and ecological fallacy where seemingly contradictory results are implied by a single set of data depending on how it's grouped. The paradox can arise in medical studies,...
SciShow
8 Creepy Animals That Are Actually Harmless
Claws, teeth, stingers... there are a lot of things that can make an animal look downright scary and dangerous. Sometimes, though, looks can be deceiving! Face your fears and learn about eight animals that use their tough looks to hide...
SciShow
SciShow Quiz Show: With the SciShow Space Reid Reimers!
Welcome to SciShow Quiz Show, where SciShow Space co-hosts Hank and Reid are back for another round!
TED Talks
TED: A mother and son united by love and art | Deborah Willis and Hank Willis Thomas
An art school professor once told Deborah Willis that she, as a woman, was taking a place from a good man -- but the storied photographer says she instead made a space for a good man, her son Hank Willis Thomas. In this moving talk, the...
SciShow
3 Messages We've Sent to Extraterrestrials
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?
TED Talks
TED: Climate justice can't happen without racial justice | David Lammy
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....
PBS
Space Used to Be Orange!!
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,...
TED Talks
Freeman Hrabowski: 4 pillars of college success in science
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
4 Awesome NASA Inventions You Use Every Day
SciShow Space shares four wonderful things that you probably use every day, all made possible by NASA technology.
TED Talks
TED: Why black girls are targeted for punishment at school -- and how to change that | Monique W. Morris
* 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 punishment,...
TED Talks
Ruby Sales: How we can start to heal the pain of racial division
"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...
TED Talks
TED: How marijuana reform could repair, reclaim and restore communities | Khadijah Tribble
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...
SciShow
The Most Hardcore Creatures on Earth | Compilation
From mice that battle scorpions to microscopic moss piglets that can survive a solar storm, here are 6 of Earth’s most hardcore beings!