The 25th Conference of Parties of the United Nations Framework Convention on Climate Change (UNFCCC) held in December last year in Madrid was generally judged a failure. After fractious negotiations exctended through two nights after the conference was due to end, delegates decided to defer some of the thorniest issues to the next UN climate summit in Glasgow in 2020. The situation is serious:

“The global emissions’ curve needs to bend in 2020, emissions need to be cut in half by 2030, and net zero emissions need to be a reality by 2050,” said Johan Rockstrom, head of the Postdam Institute for Climate Impact Research.

“Achieving this is possible – with existing technologies and within our current economy,” said the revered climate scientist. “The window of opportunity is open, but barely.”

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