A new study provides evidence for high cognitive abilities in early humans who lived 170,000 years ago. Researchers discovered that the early humans who occupied a cave had placed their hearth at the optimal location — enabling maximum utilization of the fire for their activities and needs while exposing them to a minimal amount of smoke.
Click here for original story, Early humans placed the hearth at the optimal location in their cave — for maximum benefit and minimum smoke exposure
Source: ScienceDaily