In 2009, a group of 28 internationally renowned scientists identified and quantified a set of nine planetary boundaries within which humanity can continue to develop and thrive for generations to come. Crossing these boundaries could generate abrupt or irreversible environmental changes. Respecting the boundaries reduces the risks to human society of crossing these thresholds.
In this TED talk from 2010 Johan Rockström introduces the Planetary Boundaries framework
Since the planetary boundaries were first presented in 2009, researchers from around the world have been working to advance the concept.
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Replies to criticism of the Planetary Boundaries concept
Johan Rockström: addressing some key misconceptions
Planetary Boundaries concept is valuable for policy