Fast Company reporter Kristin Toussaint spotlights a new study by MIT researchers that examines the energy burden in the U.S., the percent of a household’s income spent on energy costs. The researchers found a disproportionate number of people in the South experiencing energy poverty. “As the climate warms, we’re going to need to use more and more energy on air-conditioning, and that’s going to increase the burden on low-income households,” explains Prof. Christopher Knittel.