If you spent your childhood longing to fly, you're not alone -- and one Princeton grad may have come one step closer to making it a reality with a prototype magic carpet. Ok, it's not actually a rug of the magical variety, but a 4-inch piece of plastic electrified by tiny conducting threads. It works as such: by applying a current to the sheet, tiny air pockets form underneath, propelling it forward one centimeter a second. Since it requires air pockets to move forward, the carpet must stay close to the ground -- making it more like
