Have you ever wondered what color is? In this first installment of a series on light, Colm Kelleher describes the physics behind colors-- why the colors we see are related to the period of motion and the frequency of waves.

Mathematician Mark Kac asked the question "Can we hear the shape of a drum?" It was a question that took over 20 years to answer. Sine waves, fundamental frequencies, eigenvalues, this episode has got it all!

Ever feel like there's a international team of bad guys changing all of the easily remembered chemical names and turning them into test-failing, number-infused, pain in the neck names? Well... you're not wrong. IUPAC exists...

This animation is part of the TED-Ed series, "There's a Poem for That," which features animated interpretations of poems both old and new that give language to some of life's biggest feelings. [Poem by Aracelis Girmay, directed by Jordan...

Can we ever achieve absolute cold?

Language is complicated, especially in organic chemistry. This episode of Crash Course Organic Chemistry is all about nomenclature. We'll dive into IUPAC systematic naming of organic molecules, and get to practice with the help of three...

What has the highest melting point known to us? Hank Green explains in this episode of SciShow.

Dutch artist Piet Mondrian's abstract, rectangular paintings inspired mathematicians to create a two-fold challenge. Can you solve the puzzle and get to the lowest score possible? Gordon Hamilton shows how.

Algorithms are the sets of steps necessary to complete computation - they are at the heart of what our devices actually do. And this isn’t a new concept. Since the development of math itself algorithms have been needed to help us...

Adriene and Jacob teach you all about markets. So, in free market(ish) economies like the United States and most of the world, markets are a big deal. Markets work to produce the stuff that consumers want, and that society needs. Today...

Italy is one of the most densely populated countries in the world. While parts of Italy are highly urbanized, it might surprise you to learn that the interior of the country is underpopulated; in fact, this part of the country continues...

In this video, learn about administrative distance, a measure of trustworthiness for routing protocols.

A video entitled "Comparing Functions" which shows how to compare the y-intercept of functions when given functions' graphs, equations, and verbal descriptions.

Howcast - Learn about John Popper's 14 harmonicas, and how to play them, in this Howcast harmonica lesson with John Popper of Blues Traveler.

Howcast - Learn how to read music notation for the bass guitar from musician John Sutton in this online guitar lesson from Howcast.

Howcast - Learn how to play an A note on bass guitar from musician John Sutton in this online guitar lesson from Howcast.

Howcast - Learn how to play G, A, and B notes from musician Julie Artzt Becker in this Howcast video.

Howcast - Learn the parts of the violin and bow from musician Julie Artzt Becker in this Howcast video.

Howcast - Learn why your basement toilet smells worse than other toilets in your house from Master Plumber John Wood in this plumbing repair video from Howcast.

Howcast -Learn what are the worst starting hands in poker from poker champion Nick "Nicky Numbers" Brancato in this Howcast video.

Frustrated by tricky shadows and softer light? These steps make shooting in the shade a breeze.

Nothing makes a flight more pleasant than knowing you got your ticket at the lowest possible price.

Considering that you're likely to be paying it off for the next 25 years, you'd be wise to shop around for the best mortgage.

Tired of losing your shirt playing poker? How about a fun game for couples instead?