Long before we had cameras scientists still needed visual documentation—enter the science illustrator! Chapters VITRUVIAN MAN Credit: Leonardo da Vinci 0:34 ANDREAS VESALIUS 1:25 DE HUMANI CORPORIS FABRICA 1:59 MARIA SIBYLLA MERIAN 2:39...

A classic puzzle in graph theory, the "Utilities problem", a description of why it is unsolvable on a plane, and how it becomes solvable on surfaces with a different topology.

How couting in binary can solve the famous tower's of hanoi problem.

Taking photos used to require technical knowledge and time in a lab, but now we have electronic devices in our pockets that do all of the work for us. How do these miracle devices do it?

Genomics pioneer Craig Venter takes a break from his epic round-the-world expedition to talk about the millions of genes his team has discovered so far in its quest to map the ocean's biodiversity.

Divergence, curl, and their relation to fluid flow and electromagnetism

A geometry/probability question on the Putnam, a famously hard test, about a random tetrahedron in a sphere. This offers an opportunity not just for a lesson about the problem, but about problem-solving tactics in general.

Legendary ocean researcher Sylvia Earle shares astonishing images of the ocean -- and shocking stats about its rapid decline -- as she makes her TED Prize wish: that we will join her in protecting the vital blue heart of the planet.

Sara Menker quit a career in commodities trading to figure out how the global value chain of agriculture works. Her discoveries have led to some startling predictions: "We could have a tipping point in global food and agriculture if...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on causation and correlation.

T
ERMS:
Relationships - interconnection between parts o
f a system
- Causal - cause-and-effec
t relationships
-...

Problem 2 from the 2011 IMO

A beutiful derivation of a formula for pi. At first, 1-1/3+1/5-1/7+1/9-.... seems unrelated to circles, but in fact there is a circle hiding here, as well as some interesting facts about prime numbers in the context of complex numbers.

This is an absolutely beautiful piece of math. It shows how certain ideas from topology, such as the mobius strip, can be used to solve a slightly softer form of an unsolved problem in geometry.

Imagine you have four cubes, whose faces are colored red, blue, yellow, and green. Can you stack these cubes so that each color appears exactly once on each of the four sides of the stack?

Jessi and Squeaks are packing up for a long trip, but before saying goodbye, wanted to share some of their favorite videos.

Maybe you've seen pictures of glowing blue lava flows and dismissed them as Photoshop trickery. Healthy skepticism is good, but there really is a volcano in Indonesia where a unique fluke of chemistry creates an eerie blue glow.

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.

Sustainability is pretty clearly one of the world's most important goals; but what groups can really make environmental progress in leaps and bounds? Chris McKnett makes the case that it's large institutional investors. He shows how...

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.

Two SciShow hosts go head-to-head in a battle to figure out who will be the reigning champion for this era of SciShow Quiz Show!

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

Problem 2 from the 2011 IMO

How counting in Ternary can solve a variant of the Tower's of Hanoi puzzle, and how this gives rise to a beautiful connection to Sierpinski's triangle.

Taking photos used to require technical knowledge and time in a lab, but now we have electronic devices in our pockets that do all of the work for us. How do these miracle devices do it?