Antropocene and state shift in Earth's biosphere

In a newspaper of today I read about the following Nature article

  • Barnosky et al Approaching a state shift in Earth's biosphere Nature 486 (2011)

Needless to say, there was no direct link to this article in the newspaper -- somewhat remarkable was that the first hit on google instead led me to this article of last year:

  • Barnosky et al Has the Earth's sixth mass extinction already arrived? Nature 471 (2011)

(Edit: apparently the papers aren't freely accessible anymore, so I've changed the links)


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