“Consider this: all the ants on the planet, taken together, have a biomass greater than that of humans.  Ants have been incredibly industrious for millions of years. Yet their productiveness nourishes plants, animals and soil. Human industry has been in full swing for little over a century, yet it has brought about a decline in almost every ecosystem on the planet. Nature doesn’t have design problems. People do.”

William McDonough & Michael Braungart, Cradle to Cradle: Remaking the Way we Make Things, North Point Press, 2002, p. 17