Climate Change Is Putting World at Risk of Irreversible Changes, Scientists Warn in Rare Policy Intervention

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 Scientists urged Americans to act swiftly to reduce greenhouse gas emissions – and lower the risks of leaving a climate catastrophe for future generations.