Massive over-pollution of the earth’s air, water and land, resulting from massive human over-consumption of earth’s declining resources, is a rapidly-expanding existential threat directly caused by massive human overpopulation. To reduce our over-consuming over-polluting suicidal trend toward species self extinction, therefore, we must contain the true first cause—wantonly unlimited breeding—with reasonably disciplined breeding in order to stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating stop overpopulating.