Portrait photographer David Liittschwager traveled the world with these cubes, constructed out of simple tubing. He'd place them somewhere natural and then photograph anything that came into it--in this case, the cube was placed in Cape Town, and ended up containing 30 different plants and 70 different insects. Read more here.
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.