gosh, lots more than one

Autos get much improved gas mileage
Air quality in many cities is much improved
Many rivers and lakes have been cleaned up
Recycling is now mainstream
Wind and solar now contribute a larger and growing portion of
electrical generation
Many low head hydro dams have been removed
Better standard specs for electrical efficiency and insulation
on new construction

We should celebrate our success and use it as foundation to build more improvements

And - no paper was used to circulate this message although a vast number of electrons were temporarily inconvenienced.

Mark