A battle over plastic—a material so prolific the UN calls the 90 percent of it that ends up as trash a pollution crisis—is under way in Florida. Coral Gables, a small city of 51,000 people ...

The big picture: A new frontier in brain-computer interface (BCI) technology is emerging from an unexpected source: Gabe Newell, co-founder and CEO of Valve, the company behind Half-Life ...