After all sustainability means running the global environment - Earth Inc. - like a corporation: with depreciation amortization and maintenance accounts. In other words keeping the asset whole rather than undermining your natural capital.
I learn something from criticism because when it comes from sources you...
Just as there's garbage that pollutes the Potomac river there is garbage...
My mom loved to sing - and I'll go on record and say she was the worst singer ever. I'd get up and move away from her!