While watching the TED talk recommended by Ecogeek in comments I was reminded of the following gem:
"Imagine this design assignment: design something that makes oxygen, sequesters carbon, fixes nitrogen, distills water, accrues solar energy as fuel and makes complex sugars as food, creates microclimates, changes colors with the seasons and self-replicates . . .
why don't we knock that down and write on it?"
William McDonough of Cradle to Cradle fame, at TED
or to be more crass . . .
Why don't we knock that down and wipe our butts with it.
I debated using this image as I can't find the source. I thought it was Hecate, but I can't track it down. It was so perfect I have gone ahead sans credit. Please let me know if you know more.