Neanderthals used glue to grip tools better. The use of adhesive materials was known to early Homo sapiens living in Africa, but not to early European Neanderthals.
Researchers led by Patrick Schmidt of the University of Tübingen and Ewa Dutkiewicz of the Berlin Museum re-examined Neanderthal tools dating back to a period between 120,000 and 40,000 years ago. On the tools there were traces of a mixture of ocher, a naturally occurring pigment, and bitumen, a component of asphalt.