Seems the Earth has a somewhat crude way of trying to sustain life. Question is how well is this self repairing mechanism able to perform it's task with human influence constantly altering the air, land and water?
We constantly remove dangerous materials safely stored underground away from us bringing them to the surface. Then modify them into many different forms in which the Earth may not have the ability to cope with.
My belief is Earth can sustain only a certain number of animals, plants and people. Less of each means less consumption. Over population of any one of those or all three is something the Earth's self repairing system may not be able to handle. In other words when too much occurs too fast the Earth isn't capable of keeping up with the burdens placed on it.
