Why should anybody worry about saving earth? People can't even save themselves. Once conception is no longer a viable thing, that's the last generation of people.
Live a good life, but don't worry about the future. There isn't anything you or a group or a nation can do to save earth. Forget it, and simply live a good life. Most of the people who worry about saving the earth, still use plastics, one of the most destructive materials on Earth.
So, stop being a hypocrite, and simply live life. You can't save yourself. So how do you think you are going to save Earth?