Expert Voices

Urgent Need to Protect United States' Historic Environment

An illustration of North America's first city, Cahokia.
The pre-Columbian settlement at Cahokia was the largest city in North America north of Mexico, with as many as 20,000 people living there at its peak.
(Image credit: Painting by Lloyd K. Townsend. Courtesy of the Cahokia Mounds State Historic Site, Illinois.)

Monty Dobson, Inaugural Scholar at the School of Public Service and Global Citizenship, Central Michigan University, writes the Monty's World blogand is producing the documentary America: From the Ground Up!. He contributed this article to LiveScience’s Expert Voices: Op-Ed & Insights.

Human beings have occupied North America for most of the last 12,000 years and we have left our mark on the place. We have dug, scraped, built, destroyed and rebuilt monuments and settlements both great and small from one end of the continent to the other. We know that the impact of our collective past has forever altered the environment. Today, the impact of human activity and development on the “green environment” is a common topic when discussing development projects.

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