Observations:

1) It would seem to be financially advantageous to someone with a lot of clout to have snowmobiles in Yellowstone Park in the Winter months.
I expect there will continue to be studies done until one comes up with the right result.

2) Guilt is inappropriate and unnecesary.
Determination would be fairer to the current generation (who are not to blame), and more useful to future generations.

3) We need some kind of powerful but limited hereditary voice in, or alongside government.
Democracy was intended for a population the size of ancient Athens, not for modern Anywhere.
The Iroquois matrilineal system was intended for an even smaller population but to my knowledge has never been tried on a larger scale.
It has been successful elsewhere, but strangely susceptible to annihilation, unfortunately.
Some innovations would undoubtedly be required.

("Innovations? Now you're talking my language. Let's set aside some money for an independent study...")

John