700,000 year old stone tools were found in the Philippines despite the fact that known humans didn’t arrive until 600,000 years later. Researches aren’t sure how humans got there or what early hominid could have even made them.
To demonstrate the sharpness of stone tools, Archaeologist Dr. Adrien Hannus…
To demonstrate the sharpness of stone tools, Archaeologist Dr. Adrien Hannus elected to have major surgery done with obsidian blades rather than surgical steel scalpels. Obsidian is the sharpest substance known to mankind.