The University of Victoria paleoanthropologist Genevieve von Petzinger explains that a DNA test, which would reveal genetic mutations due to evolution, could help pinpoint the time period a painting was made and may help determine if the art was actually the handiwork of humans or Neanderthals — who lived about 130,000 to 40,000 years ago. "It would just be so fascinating to see the identity. The million dollar question is, did Neanderthals paint?" There is already some indication, according to von Petzinger, that this extinct species was, in fact, artistic. Von Petzinger said that a few years ago, some of...