By 2020, the E7 (Brazil, Russia, India, China, Mexico, Indonesia and Turkey) will hold a bigger share of world GDP than the G7, according to a study released by Oxford Economics. The shift of economic power from West to East - accelerated by one of the world's worst recessions - is combining with leaps in technology to propel emerging market growth. The result is a virtuous circle as technology boosts local consumer income and demand, and drives the use of capital and resources.