New York Times: More than 600 self-professed climate skeptics are meeting in a Times Square hotel this week to challenge what has become a broad scientific and political consensus: that without big changes in energy choices, humans will dangerously heat up the planet. The three-day International Conference on Climate Change – organized by the Heartland Institute, a nonprofit group seeking deregulation and unfettered markets – brings together political figures, conservative campaigners, scientists, an …