Posts Tagged ‘planetary boundaries’

Advancing the Planetary Boundaries Hypothesis

June 13, 2012 by Keith Kloor | Filed in ecology, planetary boundaries | 14 comments

For decades, environmentalists and many earth scientists have been warning that humans are exceeding the earth’s carrying capacity, that our numbers (7 billion and counting) and the way we farm, fish, and live is overwhelming the ecosystems we depend on. In 2009, Johan Rockström and two dozen colleagues proposed a new approach to global sustainability in…Continue Reading…

About Those Tipping Points

June 12, 2012 by Keith Kloor | Filed in biodiversity, ecology, tipping points | 5 comments

Last week, we received this scary bulletin out of Berkley, California: A prestigious group of scientists from around the world is warning that population growth, widespread destruction of natural ecosystems, and climate change may be driving Earth toward an irreversible change in the biosphere, a planet-wide tipping point that would have destructive consequences absent adequate preparation…Continue Reading…