Turn Down the Heat: Why a 4°C Warmer World Must be Avoided

Hans Joachim Schellnhuber, et al

Reviewing scientific literature, this World Bank report warns that greenhouse gas emissions will lead us to a four degree Celsius global warming in this century. The report outlines a range of risks that a four degree increase could provoke including extreme heat waves, severe droughts and floods, a decline of global food stocks, and a loss of ecosystems and biodiversity — all of which would disproportionately affect the world’s poorest regions and undermine development efforts. The authors contend, however, that a warmer world can be avoided and advocate for mitigation, adaptation, inclusive green growth, and climate-smart development policies.