In this video Paul Andersen shows conceptual thinking in a mini-lesson on inputs, processes and outputs in a system.

T
ERMS:
System models - a representation o
f a system
Interactions - reciprocal (two-way) acti
on...

Racism thrives on your silence and apathy, says human rights lawyer Dexter Dias. Telling the story of a harrowing UK court case that spotlights the corrosive effects of injustice, Dias urges us all to speak out and expose toxic myths...

It’s common knowledge that our sense of taste is tied to our sense of smell, right? But our brains are complex and taste is also tied to our senses of touch, sight, and even hearing.

Blu-rays can hold about ten times more than DVDs because Blu-ray players use special blue lasers to read them. But it took a while for scientists to figure out how to make those lasers work.

Amanda Williams shares her lifelong fascination with the complexity of color: from her experiences with race and redlining to her discovery of color theory to her work as a visual artist. Journey with Williams to Chicago's South Side and...

If you have an old, well-used whiteboard in your classroom, you might see something a little strange -- ghosts! But not the spooky, bust-able kind... these are the ghosts of lectures past!

With many women of color considering exiting the workforce due to unfair conditions, it's time to reshape systems in order to put an end to this massive loss of talent. Exposing the harmful repercussions of racist, toxic organizational...

Nature is full of all kinds of beautiful color, and there is plenty of weird science there too! Here's a showcase of a few of our episodes all about coloration.

Quick Questions dispels the myth that dogs can only see in black and white.

We all know that brushing our teeth is important but now with this experiment you can actually SEE how brushing keeps your teeth clean!

You've probably heard that carbon dioxide is warming the Earth. But how exactly is it doing it? Lieven Scheire uses a rainbow, a light bulb and a bit of quantum physics to describe the science behind global warming.

Plenty of animal eyes "glow" in the dark, but only one species has eyes that change color with the seasons.

You know how sometimes your eyes glow bright red in photos, making you look like a scary demon and ruining a priceless family memory? Well, there's a pretty cool reason it happens and ways to stop it! Learn about both in today's QQ!

Brown cats are something of a rarity, but you may have something pretty close.

The world is full of colors. Almost all of them can be described by a wavelength of visible light, but there are some colors out there that are just in your head!

We know a lot about dinosaurs but there's one question that has plagued paleontologists for decades: what color were they?

Paul Andersen explains how stability and change are regulated in systems through controls and feedback. Controls are used to regulate matter and energy flowing into a system. Feedback mechanisms within the system are used to regulate...

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...

Colors like white, pink and brown aren’t just for clouds, flowers and cows! They also describe special sounds that can actually help you focus and sleep!

Why Aren't Mammals More Colorful

In this edition of Weird Places, we visit Australia's Lake Hillier, which is a shockingly flamboyant shade of pink. Hank's here to tell you science's best guess as to why.

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...

In this edition of Weird Places, we visit Australia's Lake Hillier, which is a shockingly flamboyant shade of pink. Hank's here to tell you science's best guess as to why.

The Gaia space observatory released a detailed 3d map of the Milky Way, and scientists have figured out why Charon's north pole is red!