A risk consultant begins an engagement for a development agency.

 As global mean annual temperatures rose significantly in the 1980s, scientific consensus around human influence on climate solidified, leading to the formation of the IPCC.  

 After the World Climate Summit, global climate policy legally required countries responsible for the greatest share of cumulative emissions to cut back emissions the most.  

 Evidence from the past two decades has accumulated that warming levels will lead to tipping points, supporting an international consensus and policies around a goal of limiting warming to 2.5°C.  

 The first attempts to create international climate policies and accords focused on emissions reductions occurred in the 1970s, as anthropogenic GHG emissions were globally recognized as fact by scientists.