Serc: Serpentinite in Subduction Zones: How Do We Find It, and How Common Is It?

Use some electrifying lessons to learn about electricity. Future scientists discover the history of electricity and the basics of electric circuits. They learn how to read an electricity bill and then create circuits to power a fan,...

We taste with our taste buds, so why do flavors change when we have a stuffy nose? Scholars experiment with taste testing while holding their noses and then while smelling. They record their observations in pairs and come together to...

Imagine describing what something looks like when you've only seen it from the inside. That's the task astronomers tackle when describing the shape and characteristics of the Milky Way. Using a combination of physics and mathematics,...

Some 4.565 billion candles would be needed for a birthday cake for Earth. Young scientists view a video to learn about historical attempts to determine the age of Earth. They see how advances in radioactive dating led to the currently...

A most ingenious paradox! Through animation, the video describes the question answered by the 2012 Nobel prize winners: how do we see light? The narrator guides learners through the difficult process of measuring photons without actually...

The earth is literally older than dirt, but how can we prove it? The video explains the methods used to find the age of the moon and the earth. It offers a quick overview of the rock cycle, geologic processes, and the impact of...

Scientists measure dark matter based on gravity, but how do we find something that can't be detected by anything on the electromagnetic spectrum? Understanding what doesn't work leads to new tests and machines in the search for dark...

This year, an estimated 1,685,210 new cases of cancer will be diagnosed in the United States, and 595,690 people will die from the disease. Learners define cancer, see how and why it grows in the body, how doctors can treat it, and what...

Students think of one way to detect photosynthesis in plants besides those ways shown in class. They identify the reaction that occurs during photosynthesis. Students define the difference between an acid and a base. They identify acidic...

Jet engines generally work to generate thrust by creating a high-speed exhaust. See how this is done with fans, air compressors, a combustion chamber, and fuel. The precision is specific, especially for the turbine blade. Hear exactly...