Reflow, of the Netherlands, has come up with a great idea and a great product. They purchase plastic bottles from wastepickers and use it to be recycled into their 3D printing filament, Reflow. This offers more income to wastepickers, and the more filament they produce, the more bottles are off the street—and the happier wastepickers, impoverished individuals in developing countries, are. They will be launching a Kickstarter campaign on May 3. Read more at