In order to at least halve global emissions below 1990 by 2050 so as to increase the likelihood of avoiding the worst impacts of climate change, such as the complete melting of the Greenland ice sheet, an ambitious and inclusive post-2012 agreement is needed. This agreement should be based on the UNFCCC and the Kyoto Protocol and include a set of equitable commitments from all major economies to reduce or curb emissions of greenhouse gases. In order to stay below 2