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

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 ...

At its core, the Time Converter allows users to convert between different time zones like UTC, IST, EST and many more effortlessly. By entering the date, time, and location of an event, you can hop on ...