Mercury thermometers are handy and useful, but they could be extremely dangerous to bring on planes.

The spiral of the Milky Way is not as smooth as we once thought because an arm not so far from home appears to be broken! And we may have discovered the answer to why a local asteroid puts on the appearance of a comet.

Paul Andersen begins with a brief description of NASA discoveries related to Mars, Mercury and water. He then explains why water is required for life. He finally uses a simulation to show you why water acts as a wonderful solvent and...

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...

In this video Paul Andersen explains how intermolecular forces differ from intramolecular forces. He then explains how differences in these forces account for different properties in solid, liquids and gases. Some of these properties...

Hank talks about the last major way humans are impacting the environment in this penultimate episode of Crash Course Ecology. Pollution takes many forms - from the simplest piece of litter to the more complex endocrine distruptors - and...

Explore the four inner rocky planets, as Jessi and Squeaks take you on a tour of the solar system!

Tag along with Jessi and Squeaks to learn how to make your very own model of the Solar System!

Learn about "The Hottest Planet in the Solar System" with our catchy video! Perfect for kids, this tune will spark your imagination and teach you why Venus holds this title.

Explore the wonders of "Planets" with our catchy video that makes learning about the solar system fun! Perfect for kids, this tune will spark your imagination and teach you fascinating facts about each planet.

Learn how mercury barometers measure atmospheric pressure and how U-tube manometers are used to calculate gauge pressure in gases using the ρgh equation.

On Aug. 3, 2004, NASA launched the MESSENGER spacecraft on a historic first mission to orbit the planet Mercury.



The spacecraft's name stands for the MErcury Surface, Space ENvironment, GEochemistry and Ranging mission. It...

Howcast - In 2007, Constellation Energy began construction on a cutting-edge environmental control system for its Brandon Shores coal-fired power plant in Maryland. Three years later, the new technology – featuring emissions-cutting...

Howcast - Learn five ways to have an eco-friendly pregnancy in this Howcast video featuring Alegre of Green and Greener.

Howcast - Some fish have levels of mercury so high that it may be harmful, especially for pregnant women and young children. Find out if you may have been exposed to mercury.

Howcast -Learn what Justin Bieber's palm reveals from psychotherapist and palm reading expert Ellen Goldberg, M.A. in this Howcast video.

Howcast -Learn how to find a hand's leading mount from psychotherapist and palm reading expert Ellen Goldberg, M.A. in this Howcast video.

Howcast -Learn what "Mercury in retrograde" means from famed astrologer Jenny Lynch in this Howcast video.

Howcast -Learn how to use astrology to determine the best time to travel or take a vacation from famed astrologer Jenny Lynch in this Howcast video.

Howcast -Learn how to find and read the health line from psychotherapist and palm reading expert Ellen Goldberg, M.A. in this Howcast video.

Howcast -Learn if a vaccine can cause autism from pediatrician and child development expert Asma J. Sadiq, M.D. in this Howcast video.

Howcast -Learn what a hand can reveal about love and marriage from psychotherapist and palm reading expert Ellen Goldberg, M.A. in this Howcast video.

Those old cell phone and laptop batteries staring you in the eye? Don't worry, recycling them is easy.

Howcast -Learn where the Mount of Mercury is located and what it reveals from psychotherapist and palm reading expert Ellen Goldberg, M.A. in this Howcast video.