Newspaper article Pittsburgh Post-Gazette (Pittsburgh, PA)

Natural Changes

Newspaper article Pittsburgh Post-Gazette (Pittsburgh, PA)

Natural Changes

Article excerpt

I am writing in reference to L. Ray Roberts' letter "Extreme Heat Blasts" (July 3) and how he relates the weather and climate change to the impact of humans.

I grew up in Eastern Ohio, just 40 miles from Gateway Center. As a product of public education, I took Ohio history and learned that much of Ohio was covered by glaciers over a period of several million years. However, I also learned that the most recent glacier was the Wisconsinan Glacier that retreated from Ohio only about 14,000 years ago. These glaciers had a dramatic impact on the topography of Ohio with some areas being almost flat but others just a few miles away being blessed with hills and valleys. An even greater impact was the flow of rivers and creeks. The glaciers changed the flows from north to south to south to north. …

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