To save the planet, of course:

The United Nations is encouraging its New York staff to trade wool business suits for cooler attire this summer so the organization can slash air conditioning costs and help the environment. “There is going to be a relaxing of the dress protocols and people are being encouraged to wear lighter clothing,” said U.S. architect Michael Adlerstein, who is overseeing a $1.8 billion renovation of the 60-year-old U.N. skyscraper. Adlerstein said about $100,000 would be saved by turning the thermostats up 5 degrees to 77 Fahrenheit (25 Celsius) in the U.N. secretariat building and to 75 F (24 C) in conference rooms, during a trial run in the scorching month of August. It would also help the environment in New York City, he said. About 4,400 million pounds of steam — equivalent to several hundred tons of carbon dioxide — would be saved by reducing air conditioning at the landmark midtown Manhattan building.

I have a better idea: Kick out all of the tyrannies and kleptocracies. Think about how much CO2 that would save. . . .