G8 Summit : 50% Reduction of Global Emissions by 2050.

In what was being hailed as a historic move, Group of Eight leaders meeting in Japan agreed Tuesday to halve global greenhouse gas emissions by 2050. In a statement, G8 leaders said they would "consider and adopt" the goal of achieving "at least a 50 percent reduction of global emissions by 2050." G8 leaders said they wanted to work with the nearly 200 nations involved in UN climate change talks to meet the 2050 goal.
US has stauchly argued that any agreement without the participation of emerging powers such as India and China will be meaningless and has refused to set any ambitious mid or long -term goal for itself without commitment from developing nations as well.
But critics were adamant that the G8 leaders had in fact failed by not specifying targets for 2020, merely postponing the problem to future generations.