{
  "id": 18033039,
  "title": "Scarcer food may have pushed early humans to rework stone tools for longer use",
  "url": "https://urgent.news/2026/11/03/scarcer-food-may-have-pushed-early-humans-to-rework-stone-tools-for",
  "topic": "science",
  "section": "Science",
  "published": "2026-11-03T23:00:01.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-11-scarcer-food-early-humans-rework.html"
  },
  "original_language": "en",
  "account": "Approximately 300,000 years ago, early Homo sapiens emerged in Africa, ushering in a new era of cultural and technological advancements, now known as the Middle Stone Age. To gain insight into the lives of the earliest humans, researchers have turned to the environments they inhabited. A study led by scientists from the CNRS and University of Kiel in Germany examined sediment samples from Florisbad and Lombard's Drift sites in central South Africa.\n\nAround 200,000 years ago, the landscape of central South Africa was vastly different from today, with a mix of shrubs, temperate plants, and abundant fresh water, creating non-analogous ecosystems that have no modern equivalents. This contrasted sharply with the arid grasslands that dominate the region now. The climate was also more stable, with rainfall distributed evenly throughout the year, unlike the seasonal pattern seen today.\n\nThese ancient landscapes may have influenced the availability of food resources and, consequently, the practices of early Homo sapiens. Scientists analyzed n-alkanes, molecules found in plant leaf waxes, and preserved in sedimentary beds, to gain insight into past vegetation and climate conditions. By using luminescence dating on sand grains, they determined that certain sedimentary layers at Florisbad dated back to around 200,000 years ago, where the oldest Homo sapiens skull was discovered in 1932.\n\nComparing the reconstructed ancient landscapes with the stone tools and faunal remains found at the Florisbad site, researchers found a correlation between environmental productivity and flaking techniques. During periods of food scarcity or increased difficulty, tools were more heavily retouched, extending their durability and allowing for reuse and optimal use of manufacturing time. Conversely, when resources were more abundant, tools required less retouching and could be produced more quickly for cutting meat.\n\nThese findings suggest that early humans were constantly adapting their subsistence strategies, such as material management and animal carcass processing, to the challenges posed by their ever-changing ecosystems. The researchers believe that this approach could be applied to other sites in southern Africa, providing a deeper understanding of how climatic variability and ecosystem changes shaped the history of early human populations.",
  "summary": "About 300,000 years ago, the emergence of the first Homo sapiens in Africa was accompanied by major cultural and technological changes, marking the beginning of a new archaeological period, the Middle Stone Age. At that time, African landscapes were also undergoing profound transformations. To understand how the earliest members of our species lived and adapted, it is therefore essential to…",
  "key_points": [
    "Early Homo sapiens emerged in Africa about 300,000 years ago.",
    "Florisbad and Lombard s Drift sites in South Africa studied for ancient human life.",
    "Scarcity of food led to longer use of stone tools for early humans."
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}