Iphones. Ipads. Wikipedia. Google Maps. Yelp. TripAdvisor. New digital devices, applications, and services offer advice and information at every turn. The technology around us changes fast, so we are continually learning how best to use it. This increased pace of learning enhances the...

Do economic factors influence exchange rates? Or does market sentiment play a bigger role? Are short-run exchange rates predictable? Greg Hopper reviews exchange-rate economics, focusing on what is predictable and what isn't. He also examines the practical implications of exchange-rate theories...

On an international level, countries often engage in vigorous debate about which type of exchange-rate system to follow – fixed or flexible? A question central to that debate is: Does one particular exchange-rate system promote a more stable economic environment?

Why do proposals to lower taxes often meet with opposition in Congress. One argument is that lowering taxes without an equivalent fall in government spending may lead to future budget deficits, which will translate into higher long-term interest rates and a lower level of income. Sylvain Leduc...