Sentences with phrase «hard ecological limits»

Last week officials announced that the proposed Rio +20 framing document endorses the notion that there are hard ecological limits — «planetary boundaries» — to human development.

Their work can be seen as the latest installment of an old debate between people who perceive hard ecological limits to human population and economic growth, as these authors do, and people who think innovation will ultimately save the day, as it has done so often in the past.