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.

WASHINGTON — 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 ...

Athletes jumping off a diving board. A duck circling a pond. Planets rotating in space. What do all these things have in common? They—or at least, their robotic representations—are products of a ...