As Science publishes the updated research, four of nine planetary boundaries have been crossed
Four of nine planetary boundaries have now been crossed as a result of human activity, says an international team of 18 researchers in the journal Science (16 January 2015). The four are: climate change, loss of biosphere integrity, land-system change, altered biogeochemical cycles (phosphorus and nitrogen).
Two of these, climate change and biosphere integrity, are what the scientists call "core boundaries". Significantly altering either of these "core boundaries" would "drive the Earth System into a new state".
"Transgressing a boundary increases the risk that human activities could inadvertently drive the Earth System into a much less hospitable state,
Planetary Boundaries 2.0 – new and improved - Stockholm Resilience Centre
Planetary boundaries research
The Planetary Boundaries framework has now been updated, published in Science on 16 January 2015.
The framework was first introduced in 2009, when a group of 28 internationally renowned scientists identified and quantified the first 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.
Four of nine planetary boundaries have now been crossed as a result of human activity, says an international team of 18 researchers in the journal Science (16 January 2015). The four are: climate change, loss of biosphere integrity, land-system change, altered biogeochemical cycles (phosphorus and nitrogen).
Two of these, climate change and biosphere integrity, are what the scientists call "core boundaries". Significantly altering either of these "core boundaries" would "drive the Earth System into a new state".
"Transgressing a boundary increases the risk that human activities could inadvertently drive the Earth System into a much less hospitable state,
Planetary Boundaries 2.0 – new and improved - Stockholm Resilience Centre
Planetary boundaries research
The Planetary Boundaries framework has now been updated, published in Science on 16 January 2015.
The framework was first introduced in 2009, when a group of 28 internationally renowned scientists identified and quantified the first 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.