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Native American Elephants Roamed Continent Recently

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Gas Mileage Wasted by Bad Adjustments

Astronomer-Artist to Observe at Yerkes Observatory

Mt. Wilson to Measure Heat from Mars

How Astronomers Will Observe Mars at Closest Approach

Scientists Observe Army of Centipedes on the March

Grafted Potatoes Grow like Fruit

Extensive Program Planned at Lowell Observatory

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