Origami is the ancient Japanese art of paper folding. One uncut square of paper can, in the hands of an origami artist, be folded into a bird, a frog, a sailboat, or a Japanese samurai helmet beetle.

The art of origami goes back centuries -- enough time to explore every possible crease that can be made in a sheet of paper, one might think. And yet, researchers have now found a new class of origami ...