Independent: In what is widely regarded as the last chance to save the world from the worst ravages of climate change, 192 nations have pledged to agree a global treaty at a two-week negotiating marathon in Paris at the end of 2015 setting themselves the most ambitious political task in history.
The plan is for each country to commit to huge cuts in carbon emissions to give the world a reasonable chance of limiting global warming to 2C beyond which the consequences become increasingly devastating. Last...