Kerry calls for climate change action

US secretary of state John Kerry has called for all nations to do more to stop global warming.

Mr Kerry derided sceptics of the view that human activity causes global warming as “shoddy scientists” and “extreme ideologues”, and said big companies and special interests should not be allowed to “hijack” the climate debate.

Aides said Mr Kerry had chosen Indonesia for the first of what is to be a series of speeches on the topic this year partly because, as an archipelago of over 17,000 islands, it is particularly at risk from rising sea levels.