Last week, it was announced that we've detected gravitational waves on Earth. Now, Hank explains what that means for the future and why it's such a huge deal.

Hamish Jolly, an ocean swimmer in Australia, wanted a wetsuit that would deter a curious shark from mistaking him for a potential source of nourishment. (Which, statistically, is rare, but certainly a fate worth avoiding.) Working with a...

From asteroids capable of destroying entire species to supernovae that could exterminate life on Earth, outer space has no shortage of forces that could wreak havoc on our planet. But there's something in space that is even more...

Eighty-five percent of the matter in our universe is dark matter. We don't know what dark matter is made of, and we've yet to directly observe it, but scientists theorize that we may actually be able to create it in the Large Hadron...

Paul Andersen describes microevolution and macroevolution in the stickleback fish of Loberg Lake. He describes how anadramous fish repopulated the lake after poisoning and adapted to the new environment through natural selection. He...

What Is The Universe

If your hair gets frizzy when the humidity is high, try not to think of it as a bad hair day—you're really just a human hygrometer!

We've talked about mixtures and solutions, solutes and solvents, but what about things that can't be undone? What about Chemical Changes? Would it surprise you to know that baking a cake is a Chemical Change? Or striking a match? In this...

Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING! Knowing that the universe is expanding and how quickly its expanding also allows us to run the clock backwards 14 billion years to the way the...

Cities pump out 70 percent of all global carbon emissions -- which means they also have the greatest opportunity to lower CO2 levels and energy consumption. Climate and data scientist Angel Hsu shares how cities around the world are...

In this video students will make observations to identify materials based on their properties. Students will set up their own experiment in which they will identify the properties of ten types of matter. The video correlates to the Next...

In this video students will observe and measure an object in motion to show how patterns can be used to predict future motions. As a result of a hands-on experiment they will observe and explain patterns of motion. This program...

Live-action video footage illustrates whether the mixing of two or more substances results in new substances. Step-by-step instructions help students set up their own investigation to prove this concept. This video correlates to the Next...

Showing relative motion of two cars from the sky!

How did psychology start? This video outlines the history of psychology, from its origins in Germany with the work of Wilhelm Wundt, through into Functionalism (William James), past Freud and his Psychodynamic approach, onto Behaviourism...

Compared to many countries, Brazil actually has fewer rules concerning social etiquette in business settings. But do you really know what’s expected of non-Brazilian professionals in business interactions? Get up to speed on business...

Where is the center of the universe? All this, everything you see around you, started in a big bang, from a point smaller than the point at the end of this sentence. It as an infinitesimally small point, called a singularity....

Howcast - Learn how to read your own body language in this Howcast video.

Howcast - Learn how to operate a successful restaurant from restaurateur Paul Bolles-Beaven in this Howcast video.

Howcast - Learn if a child's clumsiness is cause for concern from Watch Me Grow founder Shirael Pollack in this Howcast video about child development.

Howcast - Need some advanced intel on her carnal qualities? Follow these steps to find out all you need to know.

Howcast -Recognizing the symptoms of memory loss is the first step toward seeking treatment from a health care professional. Here are some things to consider as you get started.

The safari's diverse ecosystems are home to various bird species, each with unique adaptations. Notable birds include the intelligent African gray parrot, the colorful lilac breasted roller, and the snake-hunting Secretary Bird....

Enterprise Island, formerly Nason Island, has a fascinating history since its charting in 1898. Located in Wilhelmina Bay, it is 1.5 nautical miles long and became known to whalers in the early 1900s. The island attracts scientists and...