MEQUON - As I climbed the stairs inside the 125-year-old silo, it was clear I wasn't alone. Occupants in the vertical structure heard my footfalls and sounded their alarms. The first I encountered was ...
Several years ago, I led a birding tour along the Missouri River. As the group and I stood on a high cliff overlooking that beautiful valley, we were entranced by the masterful flight control ...
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