The recent issue of Discover Magazine was clean energy oriented. Check out a few of the articles -
The King of Green Architecture (and his website)
Can Engineers Achieve the Holy Grail of Energy: Infinite and Clean?
From Booze to Garbage to Fusion: The Future of Energy
How - and where - will we live in 2015?
High-flying windmills blow away their ground based cousins
Turning the 'freight trains of the ocean' into hybrids
Powering the Planet with Sun Powered Balloons