Long before screens and styluses, entertainment came in the form of folded paper. One square. No cuts. No glue. Just folds. That’s all it took to create animals, flowers, boats, and birds that felt ...

Imagine this: With a simple flash of light or heat, an unassuming piece of paper folds itself into a crane and, as the light pulses, flaps its paper wings in flight. Though the concept is still in its ...