article_snippet: Rainforests are some of the richest habitats on the planet yet also the hardest for humans to inhabit.
article_snippet: Professor Julia Lee-Thorp, an archaeologist at Oxford University who helped lead the study, said: 'The isotopic methodology applied in Professor Julia Lee-Thorp, an archaeologist at Oxford University who helped lead the study study has already been successfully used to study how primates, including African great apes, adapt to Professor Julia Lee-Thorp, an archaeologist at Oxford University who helped lead the study forest environment. '
article_snippet: However, this is the first time scientists have investigated ancient human fossils in a tropical forest context to see how our earliest ancestors survived in such a habitat.'
article_snippet: but it was not clear what the landscape was like when the people were alive.
article_snippet: Rainforests, like in Sri Lankan above, may teem with life but beneath the trees life can be hard for humans. 
article_snippet: The results are significant in showing that early humans in Sri Lanka were able to live almost entirely on food found in the rainforest without the need to move into other environments. '
article_snippet: Our earliest human ancestors were clearly able to successfully adapt to different extreme environments.'
article_snippet: Professor Mike Petraglia, who also took part in the study at Oxford University, added: 'Our research provides a clear timeline showing the deep level of interaction that early humans had with the rainforest in South Asia. '
article_snippet: Our need further research to see if this pattern was also followed in other similar environments in Southeast Asia, Melanesia, Australasia and Africa.'