Parallel Histories, a Blacksburg-based nonprofit, helps U.S. teachers provide students with multiple perspectives on controversial historical topics like Israel and Palestine.

The volume of a cylinder is defined as the amount of space that a solid or liquid can occupy inside it. A cylinder is a three-dimensional shape with two identical, congruent, and parallel circular ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Erika Rasure is globally-recognized as a leading consumer economics subject matter expert, ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Amy is an ACA and the CEO and founder of OnPoint ...