Jack Dorsey launches Sun Day to track UV exposure and Vitamin D intake, following his Bluetooth-based messaging experiment ...

The Johnson & Johnson spinoff that makes Tylenol and Benadryl, said Chief Executive Thibaut Mongon has departed and that the company is considering simplifying its portfolio amid a recent sales slump.

Twitter co-founder Jack Dorsey has released a new app that tracks your sun exposure and vitamin D levels. It’s his second app ...