martes, marzo 10, 2009

Por qué la sobrepoblación es aún un grave problema

Los ríos y lagos del país están contaminados, los glaciares de donde provienen se están fundiendo (en el Nevado de Toluca y el Pico de Orizaba) de forma acelerada debido al calentamiento global, la desertificación crece, los mantos freaticos bajan aceleradamente mientras talamos más y más bosques y selvas y la población de México crece aproximadamente en un millón de nuevas bocas al año. Esa no es forma de darle viabilidad a una nación. ¿Y qué hace el CONAPO? Nada. Las campañas de planificación familiar parece se han detenido en el gobierno panista de Calderón que parece mejor seguir las ordenes de Benedicto XVI. El famoso eslogan de la familia pequeña vive mejor hace mucho que se dejó de utilizar. Mientras el gobierno federal no vea de nuevo al problema de la sobrepoblación como un grave riesgo a la seguridad nacional, este país no sobrevivirá para mediados de siglo. Y el escenario global no es tampoco prometedor. Copio de Truthdig:

We Are Breeding Ourselves to Extinction

Posted on Mar 8, 2009
AP photo / Andy Wong

China has long imposed a limit of one child per family in an effort to reduce population growth.











By Chris Hedges

All measures to thwart the degradation and destruction of our ecosystem will be useless if we do not cut population growth. By 2050, if we continue to reproduce at the current rate, the planet will have between 8 billion and 10 billion people, according to a recent U.N. forecast. This is a 50 percent increase. And yet government-commissioned reviews, such as the Stern report in Britain, do not mention the word population. Books and documentaries that deal with the climate crisis, including Al Gore’s “An Inconvenient Truth,” fail to discuss the danger of population growth. This omission is odd, given that a doubling in population, even if we cut back on the use of fossil fuels, shut down all our coal-burning power plants and build seas of wind turbines, will plunge us into an age of extinction and desolation unseen since the end of the Mesozoic era, 65 million years ago, when the dinosaurs disappeared.

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 Yangtze River dolphin, Atlantic gray whale, West African black rhino, Merriam’s elk, California grizzly bear, silver trout, blue pike and dusky seaside sparrow 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 Cenozoic, 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 born-again Christians to Marxists to free-market economists, we are destined to soon inhabit a biological wasteland.

The populations in industrialized nations maintain their lifestyles because they have the military and economic power to consume a disproportionate share of the world’s resources. The United States alone gobbles up about 25 percent of the oil produced in the world each year. These nations view their stable or even zero growth birthrates as sufficient. It has been left to developing countries to cope with the emergent population crisis. India, Egypt, South Africa, Iran, Indonesia, Cuba and China, whose one-child policy has prevented the addition of 400 million people, have all tried to institute population control measures. But on most of the planet, population growth is exploding. The U.N. estimates that 200 million women worldwide do not have access to contraception. The population of the Persian Gulf states, along with the Israeli-occupied territories, will double in two decades, a rise that will ominously coincide with precipitous peak oil declines.

The overpopulated regions of the globe will ravage their local environments, cutting down rainforests and the few remaining wilderness areas, in a desperate bid to grow food. And the depletion and destruction of resources will eventually create an overpopulation problem in industrialized nations as well. The resources that industrialized nations consider their birthright will become harder and more expensive to obtain. Rising water levels on coastlines, which may submerge coastal nations such as Bangladesh, will disrupt agriculture and displace millions, who will attempt to flee to areas on the planet where life is still possible. The rising temperatures and droughts have already begun to destroy crop lands in Africa, Australia, Texas and California. The effects of this devastation will first be felt in places like Bangladesh, but will soon spread within our borders. Footprint data suggests that, based on current lifestyles, the sustainable population of the United Kingdom—the number of people the country could feed, fuel and support from its own biological capacity—is about 18 million. This means that in an age of extreme scarcity, some 43 million people in Great Britain would not be able to survive. Overpopulation will become a serious threat to the viability of many industrialized states the instant the cheap consumption of the world’s resources can no longer be maintained. This moment may be closer than we think.

A world where 8 billion to 10 billion people are competing for diminishing resources will not be peaceful. The industrialized nations will, as we have done in Iraq, turn to their militaries to ensure a steady supply of fossil fuels, minerals and other nonrenewable resources in the vain effort to sustain a lifestyle that will, in the end, be unsustainable. The collapse of industrial farming, which is made possible only with cheap oil, will lead to an increase in famine, disease and starvation. And the reaction of those on the bottom will be the low-tech tactic of terrorism and war. Perhaps the chaos and bloodshed will be so massive that overpopulation will be solved through violence, but this is hardly a comfort.

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