Watch a volcano erupt! Play games, find project ideas, and have fun learning about ecosystems, space, energy and matter, maps, climates and more in Power Knowledge.
Our catalog is getting a software update from 10 pm on Sunday (Sept. 22) until around 1 am on Monday (Sept. 23). Please use the Classic Catalog while the update is happening. We apologize for the inconvenience! Updated 4:40 pm, 9/20/19.