Humanity Has Exceeded 4 of 9 'Planetary Boundaries,' According to Researchers
Thursday, January 15, 2015 - 19:00
in Astronomy & Space
An international team of researchers says climate change, the loss of biosphere integrity, land-system change, and altered biogeochemical cycles like phosphorus and nitrogen runoff have all passed beyond levels that put humanity in a "safe operating space." Civilization has crossed four of nine so-called planetary boundaries as the result of human activity, according to a report published today in Science by the 18-member research team.