" We have ruined this planet with pollution & extinctions,etc.
We owe it to future generations to change now & fix it right. "
You need to go fishing and see the beauty around, nothing is ruined, there's way more beauty and evidence of live thriving around us. It may be messy in your back yard, and a good cleanup would help your yard, but the earth as a whole, has more species of animals, plants, insects and humans alive ever. It's not a result of a world is in dire straits.