Unlocking Ancient Secrets: Molecular Palaeontology Reveals Human and Climate Histories

March 9, 2026
Unlocking Ancient Secrets: Molecular Palaeontology Reveals Human and Climate Histories
  • Advances in molecular palaeontology now allow detection of ancient biomarkers in sediments, including coprostanol, pollen, charcoal, leaf waxes, brGDGTs, and DNA, enriching traditional palaeoecological evidence.

  • Polycyclic aromatic hydrocarbons (PAHs) are used to infer ancient fire activity and differentiate sources and intensities, but interpretations must account for non-fire PAH inputs.

  • pollen and charcoal analyses from Mount Hora indicate a shift from forest to grassland following the arrival of farming communities, suggesting land clearance for agriculture.

  • The research emphasizes collaborative, interdisciplinary work across geochemistry, palaeoecology, archaeology, and biology to build a fuller picture of past lifeways and environments.

  • Leaf-wax hydrogen isotope ratios and brGDGT lipids are employed as palaeothermometers to reconstruct past climates and temperatures, though results require caution due to multiple influencing factors.

  • A Malawi field study collected mud cores from swamps near Mount Hora to search for coprostanol as a biomarker of past human activity.

  • Examples include evidence for early fire use around 400,000 years ago and insights into Neanderthal fire use, demonstrating how molecular data can reveal behavior not visible in bones alone.

  • The researchers acknowledge limitations and complexities, including potential contamination and multi-factor influences on biomarkers, and stress interpretation alongside radiocarbon dating and macrofossils.

Summary based on 1 source


Get a daily email with more Science stories

More Stories