Despite their limited use for testing wall chargers and power banks, USB inline testers let you compare power sources. In three videos, we take you through their features, and we also try an inline ...

Testing your battery regularly will prevent a dead battery from ruining your day. There’s only one way to answer the question, “Is it my battery, or something else” when your car won’t start: Hook up ...

Is there too much stress in your life? To find out, take this quiz, adapted from a scale developed by Peter Lovibond at the University of New South Wales. For the first 16 questions, please indicate ...

February 10, 2026 • The ability to imagine — to play pretend — has long been thought to be unique to humans. A new study suggests one of our closest living relatives can do it too.