by Matt McGrath Environment correspondent, Marrakech
The US secretary of state John Kerry says that the overwhelming majority of US citizens support the US taking action on climate change.
Speaking at a meeting in Marrakech, Mr Kerry said he believed that US commitments would not be reversed.
President-elect Donald Trump has vowed to pull the US out of the Paris Climate Agreement once in office.
Mr Kerry said that market forces, rather than policy, would ensure a transition to a low carbon world.
He played an important role in building agreement with China on how the two leading economies could reduce their emissions. He was one of the architects of the Paris Climate Agreement last December.
Speaking in his last climate conference as Secretary of State, Mr Kerry delivered a passionate and emotive defence of the global effort to tackle climate change.
Massive progress was being made, he said. Investments in renewables were booming and the trend to decarbonise the world's energy supplies was irreversible. . .
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