Archaeologists in the UK have discovered evidence that early humans were intentionally setting fires in eastern England around 400,000 years ago, significantly earlier than the previous record of 50,000 years. This finding, made at a Stone Age site in Barnham, Suffolk, includes heat-damaged tools and iron pyrite, indicating a sophisticated understanding of fire-making. The ability to control fire was crucial for human evolution, aiding survival, cooking, and social interaction. The inhabitants of Barnham were likely early Neanderthals, contemporaneous with the emergence of Homo sapiens.