Climate change is arguably the most profound challenge facing the international community in the 21st century. It is as much a challenge for poverty reduction, growth and development as it is a global environmental issue. It could undermine or reverse progress in reducing poverty and attaining the Millenium Development Goals, thereby unraveling many of the development gains of recent decades. It already threatens the livelihoods, health and well-being of millions of people worldwide, and of the poorest and most vulnerable groups in particular. And it has potentially far-reaching implications...