[Bike To Work] The World Beneath Your Feet: Glaciers in Iowa

Bike To Work has posted a new item, 'The World Beneath Your Feet: Glaciers in
Iowa'

Above: The Front edge of a glacierThe formation of most of Iowa's soils was
influenced directly or indirectly by glacial events. Glaciers slowly plowed
across Iowa several times thousands of years ago. As they advanced from the
north they dragged froze...

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