Focusing more on the green angle of NXT.
Please focus on energy conservation (which should be dictated by common logic)
WITHOUT building the argument around Global Warming.
I would even say energy COST should be the focus. Current energy costs makes Bitcoin mining marginally profitable at best when you run the numbers, while NXT on a Raspberry Pi runs at 25 nodes for the same power as a 100 W incandescent lightbulb.