Ping
The Indians were so good at killing trees that a team of Stanford environmental scientists think they caused a mini ice age in Europe. When all of the tree-clearing Indians died in the plague, so many trees grew back that it had a reverse global warming effect. More carbon dioxide was sucked from the air, the Earth's atmosphere held on to less heat, and Al Gore cried a single tear of joy.
One of the best examples of how we got Native Americans all wrong is Cahokia, a massive Native American city located in modern day East St. Louis. In 1250, it was bigger than London, and featured a sophisticated society with an urban center, satellite villages and thatched-roof houses lining the central plazas. While the city was abandoned by the time white people got to it, the evidence they left behind suggests a complex economy with trade routes from the Great Lakes all the way down to the Gulf of Mexico."