This artwork by Chris Jordan is made up of 2.4 million pieces of plastic, all collected from the Pacific Ocean. (You can see details here.) This is already staggering, but it's actually only a fraction of what gets pumped into the ocean every hour. If every one of these pieces were a pound of plastic, and it looked more like a garbage slurry and less like a classic Japanese print, that would be an hour's worth of plastic pollution.