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Debate: What Good Are Planetary Boundaries?

Nature Conservancy - Science

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.

Over Polluted Qatar Hosts UN Climate Conference

Green Prophet

This month’s United Nations Climate Change Conference (COP18) will be hosted by Qatar, the tiny peninsula nation in the Persian Gulf that holds the world record for per capita CO2 emissions. According to a report entitled Indicators of Sustainable Development 2011 released by Qatar’s statistics’ authority, the state has experienced a 27% annual increase in ozone-depleting substances, 9.3% increase in carbon dioxide (CO2).

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