A teenage girl may have gotten lost in a cave looking for water, nearly 13,000 years ago. Naia, as she's known today, likely fell to her death in a deep, dark pit.
Now, her remains are shining a light on the genetic heritage of what we believe are the first people in the Americas.
MORE: http://www.cnn.com/2014/05/16/world/americas/skeleton-mexico-americans/index.html
