Negotiations on how over 190 countries can move forward on climate change come to Durban, South Africa, amid concerns that the gap between scientific reality and political ambition remains firmly in place and may be widening. There are a multitude of encouraging developments - in 2010, for example, over US$210 billion was invested in renewable energies in countries from Germany to China, and from the United States to Mexico, Kenya and South Africa. And yet progress remains too far behind the curve in terms of the size, scale and pace of what is needed to keep a global temperature rise under 2°C this century.