Luc Besson’s new thriller Lucy is only the latest in a long line of Hollywood titles that perpetuate the notion that humans only use 10 percent of their brains, a myth that is widely refuted by ...

The 10 percent brain myth is false. We use our entire brain. Neuroscience points to several actual methods of enhancing brain efficiency, not including tapping into "unused" parts.

If someone spends $100 in one transaction, for instance, the percentage fee might be $4, or 4 percent, plus a fixed fee of roughly 30 cents. (Merchant fees vary, ranging between 2 and 4 percent on ...