There is no single definition of comfort. My newest column for The New York Times Magazine explores the different cultural definitions of pleasant living, how those traditions affect energy use in different countries, and how globalization changes both the culture and the fossil fuel consumption. Fun fact: Engineers have a unit of measurement that helps them account for clothing when they're trying to figure out what temperature an office building should be. It's called the Clo, and 1 Clo is equivalent to one full business suit. As I discovered, that fact has a big impact on women, business people in the tropics, and basically anybody who doesn't wear a suit to work.