Archaeologists have uncovered evidence that early humans inhabited dense rainforests in West Africa around 150000 years ago. The finding more than doubles the previous estimate for such habitation on the continent. It challenges long-held assumptions about early human adaptability.
Researchers working at the Bété I site in present-day Côte d'Ivoire recovered stone tools and environmental data from layers buried deep beneath what is now tropical rainforest. Multiple dating methods placed the occupation at approximately 150000 years ago. Pollen samples and plant remains confirmed the area supported a humid forested environment rather than open grassland at the time of human activity.