Climate change is putting world at risk of irreversible changes, scientists warn

The world is at growing risk of “abrupt, unpredictable and potentially irreversible changes” because of a warming climate, America’s premier scientific society warned on Tuesday. In a rare intervention into a policy debate, the American Association for the Advancement of Science urged Americans to act swiftly to reduce greenhouse gas emissions – and lower the risks of leaving a climate catastrophe for future generations. “As scientists, it is not our role to tell people what they should do,” the AAAS said in a new report, What we know. Read more.