5 - Runaway Tipping Points of No Return

Summary

Important parts of the Earth’s climate and environment can change in ways that are self-reinforcing, sudden, and irreversible. The risks of such changes are under-researched, under-reported in what is communicated by scientists to governments, and underestimated. In the most authoritative science assessments, the most important policy question of all – whether the climate will be stable at low degrees of warming – is hardly even raised.