There are two broad categories of ceiling fan: alternating current (AC) or direct current (DC). Within these two categories are a number of alternatives that use different materials, sizes and blades.

It could make you a whole lot more comfy—and cut your energy bills, too. Your ceiling fan probably gets a lot of use in the heat of summer, when it can help you keep your room cooler (and ...

even if the end result wasn’t a complete wind turbine. Perhaps if you have an old ceiling fan lying around, you can put it to better use.