Here’s a scary statistic: In 2007, 87 percent of households in the U.S. used air conditioning, compared to just 11 percent of households in Brazil and a mere 2 percent in India.
via Pocket http://www.wired.com/design/2013/10/an-ingenious-wristband-that-keeps-your-body-at-the-perfect-temperature-no-ac-required/