Throughout the evolution of the Homo sapien we have used the land to fulfill our needs. During this millennia the Homo sapien has increased its mistreatment of the environment by continually polluting or destroying the land, causing the genocide of many animals. The environment cannot be saved when people don't change. You cannot just be a vegetarian and think you are protecting the animals. You cannot just shoot deer for population control. You cannot farm every bit of land.
To save the environment we have to go primal. We have to reinforce the food chain. When pioneers started shooting everything, the balance between predator and prey was ruined . We should, for example, reintroduce the natural predators of deer, the wolf, instead of shooting deer ourselves.
We need to stabilize the earth's hunger situation by farming for the global populace instead of for each individual country.