The outline of a hand made with red pigment on the wall of a cave in Indonesia at least 67,800 years ago may be the world’s oldest rock art, according to a new study. The faded hand stencil, along ...

No right hands are shown in the illustrations or photos in your story, leading me to believe all the cave stencils are of left hands. As a left-handed person, I wonder if any of the stencil-makers ...

You report that prehistoric hand stencils on cave walls with various digits missing could represent a sign language. I am a computer scientist, not a linguist, so I have a different take on the matter ...