Politicians and business must opt to save the Earth

The world faces an unprecedented challenge: to change the high-carbon energy DNA of the global economy in the next three decades to low carbon. This requires directed technological change on a historic scale.

It could well fail, and with failure will come a planet wrecked by climate change. At Tuesday’s UN climate summit, nations began the negotiations that will continue through 2015, and that are our last chance to change course.

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