By studying the movement and bodies of insects such as ants, Sarah Bergbreiter and her team build incredibly robust, super teeny, mechanical versions of creepy crawlies … and then they add rockets. See their jaw-dropping developments in...

Jessi and Squeaks look at some amazing creatures that they found in their garden: snails and slugs!

This week, we're headed back to India to learn about the all night dance shows that culminate in killing a Demon (metaphorically): Kathakali! This form arose in the Kerala region of India, and tells traditional Indian stories, but with...

Why do we dance? African-American social dances started as a way for enslaved Africans to keep cultural traditions alive and retain a sense of inner freedom. They remain an affirmation of identity and independence. In this electric...

For the last 12 years, Carter Emmart has been coordinating the efforts of scientists, artists and programmers to build a complete 3D visualization of our known universe. He demos this stunning tour and explains how it's being shared with...

In this video Paul Andersen explains how the work is a product of the external force applied to an object or system and the distance it moves. Power is a measure of the amount of work done per unit time. The work can be calculated as...

In this video Paul Andersen explains how the resources required for survival come from the Earth. The resources are not evenly distributed on the planet and neither are the humans. According to the NGSS we need to limit the use of...

In this video Paul Andersen explains how water is unequally distributed around the globe through the hydrologic cycles. Seawater is everywhere but is not useful without costly desalination. Freshwater is divided between surface water...

Earth is a huge planet full of incredible sights and amazing creatures! But have you ever wondered where the Earth came from in the first place? Well, by looking at other stars and planets, scientists think they have a pretty good idea!

In this video Paul Andersen explains how metallic bonding structure creates the different properties of metals. The electron sea model explains how the positive nuclei are locked into a negative sea of delocalized electrons. This...

Slime molds look gross and... not smart, but they definitely seem to communicate and plan even without neurons. Michael explains the science behind these clever eukaryotes.

It's the end of this first year of Crash Course Kids and we've learned so many things. In this episode, Sabrina takes us on a tour of some of the ideas we've talked about and how they fit into our lives. Also, what all of these ideas...

Paul Andersen introduces forces, motion, and Newton's three laws in this video. He begins by describing forces as pushes or pulls on objects that produce motion. A lack of motion results from a balanced set of forces. A teaching...

Has anyone ever told you, "Stand up straight!" or scolded you for slouching at a family dinner? Comments like that might be annoying"but they're not wrong. Your posture is the foundation for every movement your body makes and can...

In this video Paul Andersen explains how engineers optimize the design solution. After a number of solutions have been identified engineers will test each of them against a given set of criteria. They will trade-off different...

A SciShow Kids viewer wants to know: How Do Our Bodies Move? Jessi explains, while Squeaks works out!

Get to know your body’s most important muscle -- your heart -- and learn how to take your own pulse!

Levers are a simple machine that help us make work easier. But how do they work and how can you make one to help you? Check out this episode with Squeaks and Jessi to learn all about levers!

Jessi and Squeaks found a ton of rocks for their rock collection... but they're too heavy to get back to the fort! Join them as they figure out the perfect simple machine to help them out: the wheel and axle!

Paul Andersen briefly surveys members of the Domain Animalia. He begins with brief description of the phylogeny of animals. He then describes the characteristics of all animals, heterotrophy, multicellularity, motility and blastula. ...

In this brief talk from TED U 2009, Jonathan Drori encourages us to save biodiversity -- one seed at a time. Reminding us that plants support human life, he shares the vision of the Millennium Seed Bank, which has stored over 3 billion...

In this video Paul Andersen explains in more detail the history of the Earth. He shows how the history of the Earth is written in the rocks that are built up over time. Fossils allow us to compare different rock layers relative to one...

Rivers are one of nature's most powerful forces -- they bulldoze mountains and carve up the earth, and their courses are constantly moving. Understanding how they form and how they'll change is important for those that call their banks...

Once every century, the world's greatest spiders gather to compete in a series of grueling games. The winner will become the next arachnomonarch, able to command all the world's spiders to their will. That day is today, and for the first...