In the 1960s and 70s, a group of chimpanzees astonished the world by learning sign language. Only two remain and one question still lingers—was it worth it?

Close your eyes for a moment and think about the most memorable movie scenes you've ever watched. Chances are, you're not ...

This book could not be a more timely book given that on Thursday, 1226, President Trump revoked the landmark ruling that greenhouse gases endanger public health ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...