The Apple Watch is always on you, secured by your wrist and locked with a passcode until it senses your skin again. That means it’s ready to pay at a moment’s notice. The convenience becomes clear in ...

The clash over how to safely achieve fully autonomous vehicles reignited this week, with Tesla’s Elon Musk and Uber’s Dara Khosrowshahi presenting sharply opposing views. At the heart of the debate is ...