Daily News and Analysis: After being blamed for the failure of last year’s climate change talks in Copenhagen, India has expressed willingness to tone down its demands in the next round, due to begin at the end of the month in Mexico. Failure at the impending Cancun negotiations is likely to lead to the lapse of the landmark carbon-cutting agreement signed in the Japanese city of Kyoto 13 years ago. “We are running out of time, Cancun is the last chance. The credibility of the climate-change mechanism is at stake,”…