It's like the tale of a superhero: By day, Gonzalo García Calvo is a musician in Madrid, but by night, he's an amateur origami artisan. You might be familiar with the art of origami from reading ...

In what may be the birth of cheap, easy-to-make robots, researchers have created complex machines that transform themselves from little more than a sheet of paper and plastic into walking automatons.

With a few folds, brightly-colored squares of paper transform into animals, birds, flowers, and trees. More talented origami enthusiasts also use their skills to create original works based on popular ...