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--- luminous:reader_2010 [2010-07-21 12:57] – 83.101.5.51
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+Researchers propose critical planetary boundaries, transgressing them could be catastrophic. But there is hope.
+Nine boundaries identified were climate change, stratospheric ozone, land use change, freshwater use, biological diversity, ocean acidification, nitrogen and phosphorus inputs to the biosphere and oceans, aerosol loading and chemical pollution.
+The study suggests that three of these boundaries (climate change, biological diversity and nitrogen input to the biosphere) may already have been transgressed. In addition, it emphasizes that the boundaries are strongly connected — crossing one boundary may seriously threaten the ability to stay within safe levels of the others.
+http://www.stockholmresilience.org/research/researchnews/tippingtowardstheunknown.5.7cf9c5aa121e17bab42800021543.html
+and
 http://www.nature.com/nature/podcast/index-2009-09-24.html
 Podcast on planetary boundaries