This UPenn grad and onetime NASA intern may be only 23, but Perry's small startup, uBeam, which wirelessly transmits power, so impressed Yahoo CEO Marissa Mayer (herself No. 3 on the list) that she invested in the company 12 minutes after meeting Perry. Andreessen Horowitz, Founders Fund, and Zappos's CEO Tony Hsieh are also investors. With $750,000 in funding, Perry has said she's building out the technology as a consumer product (exactly what is yet to be determined). Gadget fans can hope to see it on shelves in Spring 2013.
Who are 2012's young business stars? We've got the CEO of a blue-chip beer brand, an airline CEO who just placed the largest order in commercial aviation history, and Warren Buffett's new prodigy, among the Silicon Valley hotshots and others.