Bones and artefacts suggest that kids laboured at skilled tasks thousands of years ago. The teeth belonged to two children between the ages of one and nine. They date to 2100–3500 BC, making them among the oldest evidence for children engaged in skilled labour.

https://www.nature.com/articles/d41586-018-06747-w?utm_source=briefing-dy&utm_medium=email&utm_campaign=briefing&utm_content=20180919