Scientists’ Consensus on Maintaining Humanity’s Life Support Systems for the 21st Century, May 2013

“By the time today’s children reach middle age, it is extremely likely that Earth’s life-support systems, critical for human prosperity and existence, will be irretrievably damaged by the magnitude, global extent, and combination of these human-caused environmental stressors, unless we take concrete, immediate actions to ensure a sustainable, high-quality future.”

http://mahb.stanford.edu/wp-content/uploads/2013/05/Consensus-Statement.pdf