To get a better sense of what "clean tech" is and isn't, Forbes.com spoke with Ron Pernick, the founder of Clean Edge research firm and co-author of The Clean Tech Revolution.

FORBES: Magazine Article

Jim Jeffords, R-Vermont, author of the Clean Energy Act, a bill to clean up the polluting power plants, joined PIRG in releasing the report.

CNN: Nature - America's most wanted: Power plants urged to clean up their act

Each artist read a section of a poem by Man-Booker prize-winning author Yann Martel - emphasising the need for all the world's population to have access to clean water - followed by a musical or artistic performance.

BBC: 'Space clown' hosts global show

And Jon Naar, author of "Design for A Livable Planet, " suggests that 15 to 20 plants are enough to clean the air in a 1, 500 square foot office area (139 square meters).

CNN: Office foliage for feel good factor