Science news articles about 'sleeping on the ground'

CAMBRIDGE, England, April 12 (UPI) -- Evidence that chimps often leave the safety of trees to sleep on the ground raises the possibility that some early hominins did too, British researchers say.

... about the ancient transition of early hominins from sleeping in trees to sleeping on the ground. While most apes build ... to investigate why a population of wild apes chooses to sleep on the ground," concluded Koops. "We showed ...