Knowledge is power is one of the most proverbial of proverbs. It’s succinct enough to fit on a bumper sticker and clear enough that everyone can grok it. But what did it originally mean?

Economies are increasingly based on knowledge. Finding better ways of doing things has always been the main source of long-term growth. What is new is that a growing chunk of production in the ...

(Image: Jules Clark/Getty) Knowledge goes beyond memory, forming a rich and detailed understanding of your world. But you can know too much One of the brain's most useful features is the ...