Astronomers use the term dark energy to refer to energy in the universe that is unaccounted for by ordinary matter but ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Yarilet Perez is an experienced multimedia journalist and fact-checker with a Master of ...

Smart, connected products are changing how value is created for customers, how companies compete, and the boundaries of competition itself. by Michael E. Porter and James E. Heppelmann Information ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Amy is an ACA and the CEO and founder of ...