You want to outlaw volcanoes??? Or just "kill" them?
As for Your question about where the aliens were 65 million years ago: They were here resqueing the mammals from extinction, and brought them back 1209 years later to repopulate the earth.
You seem to miss the whole point: we make hundreds of species go extinct every year because on our ignorance and carelessness. We do not have to do that. If I was an alien and saw what humanity is doing to this planet I might make some "cleanup" plans as well. It's not just about global warming, that's just a tiny fraction of what we do wrong. It's about destroying, killing, ruining, polluting etc. And we do it on purpose.
