Scholars learn how rock layers, shift, and move over time. The instructor shows viewers how to solve geologic problems to determine the order of rock layers from oldest to youngest through a drawing video and then actual...

The final video in this series discusses the global carbon cycle including the cellular and macroscopic respiration. It continues with the deposition in limestone and fossil fuels, redox reactions, and concludes with a look at...

Go on an incredible journey called the water cycle with a video that details the ins and outs of water, its various forms, and place on planet Earth. 

Here is a good video that describes the main types of "flow" associated with rivers; laminer, turbulent, and shooting flow. They are all aptly described and accompanied by excellent video footage shot in Yellowstone National Park. A...