"Has the world gone mad?" No doubt, you, like me, have heard this expression a lot more often in the past couple of weeks.

The Cincinnati Reds have a new magic number following a Sept. 27 win against the Milwaukee Brewers. Learn how they make the playoffs and how to watch.

Dan Ariely is a professor of behavioral economics at Duke University and the best-selling author of Misbelief, Dollars and Sense, and Predictably Irrational. In this podcast, Motley Fool contributor ...