Did you know that babies can’t shiver to warm up? Turns out babies have a much higher concentration of brown fat (yes, that’s a thing) than adults. Also, people with lower body mass indexes (BMIs) tend to have more brown fat. Not fair. At a cellular level, brown fat cells are full of mitochondria, which give the cells their brown color. Recent findings from the Salk Institute demonstrate how the molecule ERRγ gives brown fat its energy-expending identity. According to senior author Ronald Evans, “This could lead to new ways to control the amount of brown fat in the body, which has links to obesity, diabetes and fatty liver disease.” Maybe someday the not so eerie ERRy molecule will help the 31% of people in Erie, PA who are obese. BTW, 31% is the national average. Frowny face emoji.