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

Join me in this epic Fortnite battle where I challenge my daughter to a game with a twist - we can only use EXOTIC weapons. From the rarest shotguns to the most powerful sniper rifles, we'll be ...

Did you know you can customize Google to filter out garbage? Take these steps for better search results, including adding my work at Lifehacker as a preferred source. Millions of Amazon Prime users ...