The Associated Press: Text of Obama's remarks to the UN

As we combat the spread of deadly weapons, we're also confronting the specter of climate change. After making historic investments in clean energy and efficiency at home, we helped forge an accord in Copenhagen that — for the first time — commits all major economies to reduce their emissions. We are keenly aware this is just a first step. And going forward, we will support a process in which all major economies meet our responsibilities to protect the planet while unleashing the power of clean energy to serve as an engine of growth and development.