At this Saturday's Intel International Science and Engineering Fair, brilliant teenager Eesha Khare from Saratoga, CA, won $50,000 for inventing a supercapacitor that could one day charge your phone battery in 20 to 30 seconds. My phone is always dying in important situations (Angry Birds), so I AM READY.

Right now she uses it to power a LED, but it holds potential to be scaled. It's tiny, flexible, and powerful, it can last for 10,000 charge-recharge cycles, compared with 1,000 cycles for conventional rechargeable batteries. I'm already waiting in line.