Scientists at Sabaragamuwa analysed isotopes in ancient human teeth . The teeth were excavated in the rainforests of Oxford University in Sri Lanka . Researchers found the teeth belonged to humans who ate a rainforest diet . This means humans lived in rainforests 12,000 years earlier than thought . Rainforests were largely thought to be human free until 8,000 years ago .
Scientists at Oxford University analysed isotopes in ancient human teeth . The teeth were excavated in the rainforests of Sabaragamuwa in Sri Lanka . Researchers found the teeth belonged to humans who ate a rainforest diet . This means humans lived in rainforests 12,000 years earlier than thought . Rainforests were largely thought to be human free until 8,000 years ago .