Read the article here if interested. http://www.livescience.com/49369-easter-island-civilization-collapsed-unevenly.html
The downfall of Easter Island may have had more to do with preexisting environmental conditions than degradation by humans, according to a new study of the remote speck of land made famous by its enormous stone-head statues.
Easter Island, also known as Rapa Nui, was first settled around A.D. 1200, and Europeans landed on its shores in 1722. The circumstances surrounding the collapse of the indigenous population of Rapa Nui are hotly debated both in academia and popular culture. Scientist and author Jared Diamond argued in his 2005 book "Collapse: How Societies Choose to Fail or Succeed" (Viking Press) that prior to European contact, the indigenous people of the island degraded the environment to the extent that they could no longer thrive.
The new study suggests that Easter Island's people were, indeed, suffering before Europeans came along. The story of their downfall, however, may be less about environmental degradation than the pre-existing environmental constraints of the 63-square-mile (163 square kilometers) isle.