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The clear and present danger of climate change means we cannot burn our way to prosperity. We already rely too heavily on fossil fuels. We need to find a new, sustainable path to the future we want. We need a clean industrial revolution.

In the case of climate change, the threat is long-term and diffuse and requires broad international action for the benefit of people decades in the future. And in politics, the urgent always trumps the important, and that is what makes it a very difficult and challenging issue.

The best way to deal with climate change has been obvious for years: cut greenhouse-gas emissions severely. We haven't done that. In 2010, for example, carbon emissions rose by six per cent - the largest such increase on record.

Climate change is a terrible problem, and it absolutely needs to be solved. It deserves to be a huge priority.

We really need to kick the carbon habit and stop making our energy from burning things. Climate change is also really important. You can wreck one rainforest then move, drain one area of resources and move onto another, but climate change is global.

We need policy change, and the most important thing people can do is to contribute and participate in the political process. We have to vote climate change deniers and people who will create subsidies for the fossil fuel industry out of office. We have to protest when bad decisions are being made about fracking or tar sands.

So much of what we do addresses the issues that are associated with climate change, whether it's working to reduce emissions, whether it's working to nail down our renewables, whether it's ensuring great efficiency in accessing all of our energy sources.

Climate change is such a huge issue that it requires strong, concerted, consistent and enduring action by governments.

We have to wrap this imperative of addressing climate change in a prosperity framework, and secondly we have to do a much better job of putting forward an American jobs agenda that's a match for the climate challenge.