How do candles work? What keeps the wick burning, seemingly forever, when the same twine would completely burn up in a matter of minutes if it weren't engulfed in wax? Why won't the wax burn without a wick?
You might have heard that fluorescent bulbs are supposed to be more efficient than normal light bulbs, but is this really the case? See more »
When you're whipping up your famous paella, the thought of saving money and energy probably isn't at the front of your mind. Yet you could be saving money every single time you cook --if you have an energy-efficient stove. See more »