IPCC climate report: human impact is 'unequivocal'

UN secretary-general urges global response to clear message from scientists that climate change is human-induced

Fiona Harvey in Stockholm
theguardian.com, Friday 27 September 2013 06.48 EDT

World leaders must now respond to an "unequivocal" message from climate scientists and act with policies to cut greenhouse gas emissions, the United Nations secretary-general urged on Friday.

Introducing a major report from a high level UN panel of climate scientists, Ban Ki-moon said, "The heat is on. We must act."

The world's leading climate scientists, who have been meeting in all-night sessions this week in the Swedish capital, said there was no longer room for doubt that climate change was occurring, and the dominant cause has been human actions in pouring greenhouse gases into the atmosphere.