1. SOLAR ENERGY
China's 'coal capital' tries to step into the sunshine
DATONG, China -- A decade ago, this ancient capital city in northern China was shrouded in coal dust. Now, in an ambitious bid to rebrand itself as a solar city, Datong has played host this week to Asia's first-ever Solar Decathlon, an international intercollegiate competition organized by the U.S. Department of Energy to promote innovative solar-powered residential designs.