With a little more encouragement, what once was an eccentric way to roof your home could soon become the universal standard, turning our cities into lush, green metropolises.

CNN: Green roofs cool cities, combat climate change, say Germans

Certainly this would seem the case--America's highways haven't seen so many eccentric cars since the Great Fin Era of the late 1950s, and everything in our offices is turning translucent orange, blue or pink.

FORBES: The Coupe Coup