Denmark

It can sometimes be a little unclear (especially first day of a new year) how the previous year changed the world. No one guessed in 1946 that the Magnetron Spencer Percy was developing for use in a RADAR system (and that subsequently melted a candy bar in his pocket) would one day become the microwave oven. But I like to think that we can make some pretty good guesses about which of this year's innovations are going to be with us, and changing our world, for a good long time.

The mayors of San Jose, San Francisco, and Oakland, Calif., have joined with the Silicon Valley Leadership Group, the Bay Area Council, and mobile network-technology provider Better Place to foster the development of plug-in electric vehicles and other elements of green infrastructure.

When Google began hiring in Zurich for its new engineering center in 2004, local officials welcomed the U.S. company with open arms. Google's arrival is still bearing fruit for Zurich: 450 employees, about 300 of them engineers, work in Google's seven-story complex in a converted brewery on the outskirts of the placid mountain metropolis.