As Development Secretary, I have seen in the developing world that climate change there is not a theory, is not a future threat: it is a contemporary crisis.

I've become interested in the impact of climate change on the world and the future of energy needs for the developing world.

We know that climate change is the single most important environmental issue facing the world today. ... The longer we wait the larger will be the challenge,

Nuclear power cannot save the world from climate change. Returning to nuclear will simply hamper real action to reduce energy demand, develop better alternatives and tackle climate chaos.

Climate change is transforming the world in profound ways that continue to evolve.

The measurements show long-term trends. Glaciers react to climate change, and warmer temperatures in the Alps are reflected in the results.