"We are experiencing an accelerated obliteration of the planet’s life-forms — an estimated 8,760 species die off per year — because, simply put, there are too many people. Most of these extinctions are the direct result of the expanding need for energy, housing, food and other resources. The , , , , , , and are all victims of human overpopulation. Population growth, as E. O. Wilson says, is "the monster on the land." Species are vanishing at a rate of a hundred to a thousand times faster than they did before the arrival of humans. If the current rate of extinction continues, Homo sapiens will be one of the few life-forms left on the planet, its members scrambling violently among themselves for water, food, fossil fuels and perhaps air until they too disappear. Humanity, Wilson says, is leaving the , the age of mammals, and entering the Eremozoic — the era of solitude. As long as the Earth is viewed as the personal property of the human race, a belief embraced by everyone from Christians to Marxists to free-market economists, we are destined to soon inhabit a biological wasteland."