Humans Living Far Beyond Planet's Means

by Ben Blanchard, Tuesday, October 24, 2006 by Reuters

BEIJING - Humans are stripping nature at an unprecedented rate and will need two planets' worth of natural resources every year by 2050 on current trends, the World Wildlife Fund said on Tuesday. Populations of many species, from fish to mammals, had fallen by about a third from 1970 to 2003 largely because of human threats such as pollution, clearing of forests and overfishing, the group also said in a two-yearly report.

"For more than 20 years we have exceeded the earth's ability to support a consumptive lifestyle that is unsustainable and we cannot afford to continue down this path," WWF Director-General James Leape said, launching the WWF's 2006 Living Planet Report. "If everyone around the world lived as those in America, we would need five planets to support us," Leape, an American, said in Beijing.

The report said humans' "ecological footprint" -- the demand people place on the natural world -- was 25 percent greater than the planet's annual ability to provide everything from food to energy and recycle all human waste in 2003. In the previous report, the 2001 overshoot was 21 percent.

"On current projections humanity, will be using two planets' worth of natural resources by 2050 -- if those resources have not run out by then," the latest report said. "People are turning resources into waste faster than nature can turn waste back into resources."

"Humanity's footprint has more than tripled between 1961 and 2003," the report said. Consumption has outpaced a surge in the world's population, to 6.5 billion from 3 billion in 1960. U.N. projections show a surge to 9 billion people around 2050. It said that the footprint from use of fossil fuels, whose heat-trapping emissions are widely blamed for pushing up world temperatures, was the fastest-growing cause of strain.

Leape said China, home to a fifth of the world's population and whose economy is booming, was making the right move in pledging to reduce its energy consumption by 20 percent over the next five years. "Much will depend on the decisions made by China, India and other rapidly developing countries," he added.

The WWF report also said that an index tracking 1,300 vetebrate species -- birds, fish, amphibians, reptiles and mammals -- showed that populations had fallen for most by about 30 percent because of factors including a loss of habitats to farms.