Six thousand miles away, in Beijing, China, lives Luo Wei, age 25. Recognized for her athletic potential when she was still in elementary school, she trained as a hurdler for several years. In 1999, however, she turned to taekwondo.
Investing in the cutting edge is inherently risky. But these five firms -- either technology companies working on breakthoughs or mature businesses benefiting from new trends -- are best positioned to turn innovation into profits. More