You might have noticed that some gas stations occasionally offer specials on unleaded 88 octane gas—also known as E15—which contains 15 percent ethanol. Ethanol is an alcohol that’s derived from corn.

Folks have been experimenting with ethanol in modern combustion engines even when they weren't so modern. Nicolaus Otto, the inventor of the traditional four-cycle engine, used it to power one of his ...

If you own a gas-powered mower, you’ve probably wondered whether it’s worth hunting down ethanol-free fuel or if regular pump gas is good enough. I’ve wrestled with the same question, and the answer ...