NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.

If you're planning to increase your electrical load by adding a new major appliance, make sure your panel can handle it. Here's how.

Disposable batteries seem so 1990s. Sure, it’s nice to be able to spend a couple of bucks at the drugstore and get a flashlight or TV remote back in the game, but when the device is a daily ...

In grade school, you were constantly drilled on mathematics. But as an adult, those lessons all too often fall to the wayside ...