Did you know we can actually make diamonds in a lab? It's true! We can! And this is both really good and really cool. In this episode of Crash Course Kids, Sabrina shows us how materials scientists have done just that and why it's so...

Humans have an almost insatiable energy demand, so scientists and engineers are always on the lookout for sustainable ways to provide the energy we need. And some of these ideas go way beyond solar panels and wind...

We’ve talked about different materials engineers use to build things in the world, but there’s a special category of materials they turn to when building things to go inside our bodies. In this episode we’ll explore the world...

Moving on to our unit on the Physics of Electricity, it's time to talk about charge. What is charge? Is there a positive and negative charge? What do those things mean? In this episode, Shini talks about electrostatic forces, electrical...

From wasps nests to nuclear reactors. Here are just a few clever ways archeologists figure out how old something is.

Light is everywhere … but it’s not as predictable as you might think. It’s a wave that travels in straight lines, yet it also reflects off of surfaces, refracts through various materials, and generally changes direction all the time!...

Hank brings us to the next level of ecological study with ecosystem ecology, which looks at how energy, nutrients, and materials are getting shuffled around within an ecosystem (a collection of living and nonliving things interacting in...

So, we know what materials are, but can we make new materials? Or improve the materials we already have? In this episode of Crash Course Kids, Sabrina shows us how Material Scientists are working on these two things today. Also, your...

Humans, octopi and pine trees alike are all made up of cells, tiny but sophisticated systems that keep life going. Cells are almost like tiny factories run by robots, with the nucleus, DNA, proteins, lipids, and vitamins and minerals all...

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...

Today roads, sidewalks, bridges, and skyscrapers are made of a material called concrete. There's three tons of it for every person on Earth. It's also played a surprisingly large role in rising global temperatures over the last century....

Adam Savage makes things and builds experiments, and he uses costumes to add humor, color and clarity to the stories he tells. Tracing his lifelong love of costumes -- from a childhood space helmet made of an ice cream tub to a No-Face...

So... do plants need dirt? The truth might shock you. In this episode of Crash Course kids, Sabrina talks about how plants get energy and how that energy is transported around them. Also, she talks about dirt.

Australians call them “runners." The British know them as “trainers.” Americans refer to them as “sneakers.” Whatever you call them, these casual shoes are worn by billions of people around the world. Today, roughly 23 billion shoes are...

In this video Paul Andersen explains how the resistivity of a material opposes the flow of charge. Conductors (like metal) will have a low resistivity and insulators will have a high resistivity. Semiconductors will have a moderate...

New ReviewPMI Agile Certified Practitioner (PMI-ACP) is PMI’s certification for Agile Practitioners. They designed it to demonstrate deep knowledge of Agile principles and methods. In autumn 2024, PMI updated the syllabus massively. Let’s look at...

New ReviewPMI Risk Management Professional (PMI-RMP) is PMI’s certification for Risk Management. They designed it to offer a professional credential for project risk managers.

Thomas Edison is remembered as one of America’s greatest inventors—but his path to success was filled with failure. Before the light bulb worked, it failed over 1,000 times. His early businesses struggled, and some of his inventions...

How do smartphones and 3-D models change how we experience art? And even history itself? In this episode of Crash Course Art History, we’ll learn how technology is shifting the ways we think about art’s past, present, and future....

How can the color “red” be a global commodity? How can the way a statue stands be a sign of cultural exchange? In this episode of Crash Course Art History, we’ll explore how trade networks have moved both materials and ideas — and how...

Howcast - Learn all about teeth veneers from Shane Methal DDS in this Howcast video.

Howcast - Learn how to throw a modern wedding from celebrity wedding planner Barbara Esses in this Howcast video.

Howcast - Learn eight tips about bike frames from Silk Road Cycles' Brendon Nicholas in this Howcast bicycle repair and maintenance video.

Howcast - Learn how to solder safely from expert Jeff Koskulics in this Howcast video.