"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 does not have a design problem. People do."
An abstract from Cradle to Cradle: Remaking the Way We Make Things by William McDonough and Michael Braungart