Fortune tellers have their glass ball, futurists have their charts of trends, and science fiction writers have their imaginations. Which would you use to predict the future? See what this video has to say about predicting the...

The amount of pain one experiences is not directly connected to the amount of tissue damage. In fact, it is possible for pain to occur without any tissue damage at all! A video lesson digs into the science behind the phenomenon and asks...

This fresh resource explores the world's fresh water: where it can be found, and how humans use it. You might be surprised at the variety of domestic uses! Short, but sweet, this feature can be followed by a class discussion using the...

Our relationship with toxins is, well, a little toxic. Explore how harmful substances work their way throughout the environment with a video from an expansive biology playlist. Topics include DDT and mercury, trophic levels, and water...

All circuits are not created equal! Building on the previous lessons in the Crash Course series, the 29th lesson explains how electric current flows through a circuit. It spends equal time discussing both series and parallel circuits.

Some of the best advice for society, relationships, and personal growth was written nearly 3,000 years ago. High schoolers learn more about Plato's four ideas for reaching eudaimonia, or "fulfillment," in an explanatory video.