I want to focus on the environmental benefits of recycling. I want to start with an example. If there's a coal-fired plant that emitted sulphur dioxide and the laws were changed so they had to put scrubbers in, sulphur dioxides were removed, then acid rain declines, air quality improves, and that's a clear environmental result of that action.
What is the clear environmental result, in a quantitative fashion, of all of the recycling programs that have been going on for the last 20-odd years?