While the challenges we face this year are huge, there has never been better momentum for a groundbreaking deal. Climate chaos can and must be prevented but it requires nothing less than an ambitious and urgent emergency plan for the planet and our future. The Copenhagen Summit must agree to legally binding, timely and deep emissions reductions that are ambitious, equitable andfair. These must be supported by funding mechanisms and policies that enable a sustainable energy future, protect our magnificent natural forests and create a renewable energy revolution, while meeting the needs of the poor.