illusion

The magician snaps his fingers and a ball disappears right in front of your eyes. How is this possible, you ask yourself?

The woman in Da Vinci’s famous painting doesn’t always appear to be smiling, thanks to an artistic technique.

2014 USA Science & Engineering Festival: Fighting hypothetical zombies with crossbows, making Ferris wheels out of Knex, having fun with Bill Nye and liquid hydrogen, playing with robots—the joys of science.