The Material World

Sometimes, power plants make too much electricity. Energy storage technologies can help! They store the extra electricity and release it when demand goes up.

10 images of some birds such as finches, chickadees and cardinals that produce sounds and calls in a musical way

5 images of predatory birds that hunt and feed on other animals such as eagles, the Great Horned Owl and vultures

Arm wrestling isn’t just a test of strength. It’s also a test of how well you understand torque.

12 images of some birds such as seagulls, puffins, ducks and Canada Geese that live on or around freshwater or saltwater habitats

Have you ever been on a ship and wondered how you’re staying afloat? The answer is buoyancy!