New Yorker: Next Tuesday, leaders of a hundred and twenty nations, President Barack Obama among them, are scheduled to gather in New York for the United Nations climate summit, called by Secretary-General Ban Ki-moon. Ahead of the summit, on Sunday, tens of thousands of demonstrators are expected to march through midtown Manhattan demanding that those leaders take action. Almost certainly, the leaders will disappoint the marchers, not to mention anyone else who cares about the future of the planet, though by...