Debate: What Good Are Planetary Boundaries?
Nature Conservancy - Science
MARCH 24, 2013
Does Earth have limits — limits to how far we can push its natural systems and deplete its resources, beyond which we will incur major blowback? in Nature (“ A safe operating space for humanity “) that first broached numerical thresholds for nine “planetary boundaries” — categories of human-nature interaction ranging from climate change to land system change, rate of biodiversity loss to ozone depletion.