TEHRAN--This chopper-shaped tool, made of quartz, was discovered near the Kashafrud River in Khorasan Razavi province, ...

The finding casts doubt on whether all the stone flakes found in archaeological digs really are the tools of early hominins — and raises the possibility that they might be accidental by-products ...

this tool marks a pivotal moment in the technological evolution of our ancestors. The chopper’s design, characterized by a deliberate and strategic removal of flakes to create a sharp edge ...

NEW YORK-- Call them knockoffs. Rock-smashing monkeys in Brazil make stone flakes that look a lot like tools made by our ancient ancestors. Scientists watched as Capuchin monkeys in a national ...

These flakes resemble some sharp-edged stone tools presumed to have been created on purpose by ancient hominids, researchers say. Previous research has already shown that rock-wielding capuchin ...