Environmental Wackos don't know how resilient Nature is.
(1) Mt St. Helens eruption, alone, released more energy than all the munitions used by the entire world since they were discovered, including atomic and nuclear bombs.
(2) If you think nature won't recover on it's own quit mowing your lawn for a year and watch what happens.
You will also find that most of these Wackos live in the city and don't have a clue as to what they are talking about.
They need to live on a farm for a while and they will realize that their food doesn't come from the grocery store, it comes from the land. Country folks aren't about to destroy the land that supplies their lively hood.