No one tells you what those different beeps or on-off lights on your smoke detector mean. Here's what you need to know.

The U.S. Postal Service has issued a new warning: be careful when mailing checks. The USPS reported a recent surge in attacks on letter carriers and mail fraud, stating that 305 mail carriers were ...

General Motors' active fuel management system is an ingenious piece of engineering. Here's what it does, how it works, and why some hate it.