Abstract

The ‘Lima Call for Climate Action’ decision marked the conclusion of the 20th session of the Conference of Parties to the United Nations Framework Convention on Climate Change. It expresses how the 196 UNFCCC Parties intend to negotiate the elements of a new agreement to be opened for signature in Paris at COP21. This ‘Paris Agreement’ would govern Parties starting in 2020, when the Kyoto Protocol's second commitment period ends. The new agreement would also move Parties beyond the Kyoto Protocol's focus on mitigation to include adaptation, finance, technology development and transfer, and capacity building requirements. At COP20, Party delegates struggled to find consensus on how to act on the UNFCCC's core principle of ‘common but differentiated responsibilities and respective capacities’ when drafting the Call for Climate Action. In this article, we provide a detailed account of the evolution of the COP20 decision, to show how both its overall structure and specific language shifted in..