Even the best consumer 3-D printers require a whole lot of brains to create the simplest plastic tchotchke. Toymaker Maxwell Bogue doesn't think creative expression in three dimensions should be so hard, so he created the 3Doodler: a plastic-melting pen that lets you draw objects in midair.
We've covered the pen before. But we still wanted to catch up with Bogue at the recent 2013 Kairos Global Summit on the floor of the New York Stock Exchange to see just what this little gadget could do:
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.