Even though it may be cold outside, we can always think like engineers! Learn how to build a snowman -or a snowrat- with Jessi and Squeaks!

Author George Dyson spins the story of Project Orion, a massive, nuclear-powered spacecraft that could have taken us to Saturn in five years. His insider’s perspective and a secret cache of documents bring an Atomic Age dream to life.

Hank Green presides over this battle between the other two hosts of Eons. They know dinosaurs, but how much do they really know about industrial grease?

If you’ve ever experienced constipation while traveling, don’t worry - you are not alone, and there may be some things you can do to avoid it.

The suits, numbers and colors in a deck of cards correspond to the seasons, moon cycles and calendar. Marco Tempest straps on augmented reality goggles and does a card trick like you've never seen before, weaving a lyrical tale as he...

When a group of apes got split apart, slight differences in their new environments led to big differences in future generations.

Why are all the gas stations, cafes and restaurants in one crowded spot? As two competitive cousins vie for ice-cream-selling domination on one small beach, discover how game theory and the Nash Equilibrium inform these retail hotspots.

Reporter Janine di Giovanni has been to the worst places on Earth to bring back stories from Bosnia, Sierra Leone and most recently Syria. She tells stories of human moments within large conflicts -- and explores that shocking transition...

Wolfgang Amadeus Mozart's "Die Zauberflote" ("The Magic Flute") is widely regarded as one of the most influential operas in history. And while it may seem like a childish fairytale at first glance, it's actually full of subversive...

New York was planning to tear down the High Line, an abandoned elevated railroad in Manhattan, when Robert Hammond and a few friends suggested: Why not make it a park? He shares how it happened in this tale of local cultural activism.

How do you build a product people really want? Allow consumers to be a part of the process. "empathy for what your customers want is probably the biggest leading indicator of business success," says designer Tom Hulme. In this short...

Can we call any economy "healthy" in the face of dwindling resources and growing inequality? What if we cut off our addiction to endless growth, and used a new compass for modern prosperity? One such compass is known as "doughnut...

What's the Best Way to Teach Science?

The Ancient Egyptian king Thutmose III described the chicken as a marvelous foreign bird that "gives birth daily." Romans brought them on their military campaigns to foretell the success of future battles. Today, this bird occupies a...

It's never easy to get across the magnitude of complex tragedies -- so when Brenda Romero's daughter came home from school asking about slavery, she did what she does for a living -- she designed a game. She describes the surprising...

Author Steven Johnson takes us on a 10-minute tour of The Ghost Map, his book about a cholera outbreak in 1854 London and the impact it had on science, cities and modern society.

Gayla Benefield was just doing her job -- until she uncovered an awful secret about her hometown that meant its mortality rate was 80 times higher than anywhere else in the US. But when she tried to tell people about it, she learned an...

If you weighed 99 lbs, and ate 1 lbs of nachos, would that make you 1% nacho? Hank attempts to answer this question with a series of deeper questions on this episode of SciShow quick questions.

They're slippery. They're slithery. And while they totally look like underwater snakes, eels are, in fact, unique fish that can breathe through their skin and even survive out of water. James Prosek tracks the life journey of Eli the...

What’s irrational and never ends? Pi! Hank explains how we need pi to explain some of the most basic but most important principles of the universe, in honor of Pi Day.

Computer science professor Shimon Schocken is also an avid mountain biker. To share the life lessons he learned while riding, he began an outdoor program with Israel's juvenile inmates and was touched by both their intense difficulties...

Paul Andersen explains how the structure of objects are related to their function and vice versa. He begins with a quick quiz on bicycle construction and ends with a progression of teaching for students grades K-12. He also explains...

Abortion is extremely common. In America, for example, one in three women will have an abortion in their lifetime, yet the strong emotions sparked by the topic -- and the highly politicized rhetoric around it -- leave little room for...

Ice cream is a great treat, but you have to eat it slowly! Otherwise, you'll get what some people call a 'brain freeze,' which is a super bad headache that lasts for a couple seconds. But how does ice cream hurt your head?!