Irish Times: The last time so many world leaders gathered to talk about climate change, it was an unmitigated debacle: the 2009 Copenhagen summit intended to chart a international treaty collapsed amid a welter of recriminations and set back the effort to deal with global warming.
This time in New York its different, or so they say. UN secretary-general Ban Ki-moon expects each president, prime minister or potentate to pledge what his or her country will do to help achieve the agreed goal of capping the...