Redwood Materials, run by Tesla cofounder JB Straubel, is building North America's biggest battery recycling operation. Tech editor Alistair Barr visited the Nevada factory in March to see how the company is creating the new "black gold."
Former Microsoft CEOs Bill Gates, left, and Steve Ballmer, center, pose for photos with CEO Satya Nadella. The company is taking its foot off the AI accelerator.