What better excuse for creative hijinks than Halloween, with its pageant of illusion, to re-imagine the wonders of science and technology?

We've gathered some Halloween projects that do just that: from green fire to candy glass, smoke rings to fire-emitting scythes, and from a costume that blasts off to a set of fiber optic fairy wings, these spooky creations are extra fun because they're grounded in nature, chemistry, and technology.