Other artefacts the team examined included 14 stone tools, which were radiocarbon-dated to between 2090 and 2540BC.

BBC: Maize was key in early Andean civilisation, study shows

Traces of other stone tools such as scrapers have been estimated as dating back more than 50, 000 years.

BBC: Desert finds challenge horse taming ideas

In West Africa, apes at several locations use wood or stone tools to crack nuts to feed on the kernels.

BBC: Cultural habits of chimps

Crucially, OH 65 was found with stone tools and with bones from larger animals that clearly show the marks made by those tools.

BBC: Fossil key to human origins

To be sure, the discovery of metallurgy was a huge leap forward in technology, but stone tools are sophisticated in design in their own right.

FORBES: The First Human Technology

These stone tools generally consisted of sharp flakes battered off a stone core, but early hominids also did more sophisticated flaking and retouching to sharpen and straighten their blades.

FORBES: Magazine Article

Other important stone-working tools include picks, hammers, drills and saws.

FORBES: Magazine Article

It was not until 40, 000 years ago that they began to re-establish conjugal relations, possibly as a result of the technological revolution of the Late Stone Age, which yielded new and more finely crafted tools.

ECONOMIST: Human evolution: Before the exodus | The

Throughout history, humans have relied on wood and stone to shelter and protect themselves, and the chisel is one of the best tools to work those materials.

FORBES: Magazine Article

This mission is based on the philosophy that if hardworking, destitute families are given the opportunity, tools, and resources to improve their lives, they will have a stepping stone to emerge from the poverty cycle and give their children better educational opportunities in order to lead happier, healthier lives.

WHITEHOUSE: Champions of Change Blog