Meet the man fighting plastic pollution with a fleet of AI-powered camera drones

That plastic cup you've got sitting on your desk looks pretty harmless on its own. However, add it to the rest of the plastic that humanity throws away on a daily basis and you have the makings of the estimated 5 to 13 million metric tons of plastic trash which reportedly wind up in the world's oceans every year. U.K.-based Plastic Tide founder Peter Kohler got a glimpse of the scale of this problem a decade ago -- and it changed the course of his life. "About ten years ago, I went out to the South Pacific," he told Digital Trends. "I've always been fascinated by oceans, and this was pure paradise. But it was a paradise under siege. One of the most visible ways this paradise was being besieged was with litter. It was everywhere, although we were miles from anyone. When you're sailing in the middle of nowhere, it really gets you wondering where this litter comes from and how it gets here. I came back to England and spent the next few years puzzling over how best to answer that question."