Saw a documentary on Rapa Nui (Easter Island). Archaeologist believe that the Island was inhabited by Polynesians who migrated from Taiwan approximately 1 thousand years ago to then a green paradise, full of palm trees, and surrounded by water and thousands of miles away from other land mass. To makes a long story short, the Rapa Nui people started using the Islands natural resources and not replenishing it, i.e. planting, harvesting, et al., the Island turned into a barron mass land and its people could not re-group. Also foreigners came and either killed them or took them as slaves, and the remaining people started fighting each other.
History is telling the modern humans of what can happen when people start fucking with the earth and nature. These people never learn. GREED sets in and nothing else matters.