Fellow William Rees was quoted in an article on sustainable prosperity, and the failure of capitalism to promote real sustainability. The article was part of a series on sustainable development by Inter Press Service and the International Federation of Environmental Journalists.
International agreements to fight global problems, like the thinning of the atmosphere's ozone layer and climate change, have used market principles to achieve compliance by the private sector.
But the problem is, "we are consuming 25 percent more than the Earth can give us each year," says William Rees, of the School of Community and Regional Planning at the University of British Columbia.
Rees and other experts have calculated that annual human consumption of natural resources exceeds the planet's ecological capacity to regenerate them by 25 percent, a proportion that has been growing since 1984, the first year they calculate that humanity crossed that capacity threshold.