By Tanner Garrity The lifetime prevalence of non-specific back pain is now as high as 70% in industrialized countries. It’s become so common that scientists are digging way back in time for answers. Most recently, they’ve assessed the remaining fossils of Neanderthals, our closest ancient human relatives, who went extinct roughly 40,000 years ago. In popular culture, the species is often depicted as an undeveloped hominid with poor posture (think of those evolution pictographs), but according to research published in PNAS Nexus, Neanderthals displayed similar spine curvature to the Homo sapien…