New York Times: The United Nations has long been accused by its detractors of generating hot air. Starting in August, a glance at the thermostat in the Secretariat building will provide confirmation. To set an example in the effort to curb energy use that contributes to global warming, the secretary general, Ban Ki-moon, has approved a one-month pilot project to raise the thermostat throughout much of the landmark building to 77 degrees from 72 degrees. The thermostats in the often windowless …