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The Atmosphere Never Dark on a Windy Night - p226
doi:10.1038/scientificamerican04081848-226i
Teller & Dillenback's Improved Water Wheel - p228
doi:10.1038/scientificamerican04081848-228e
Active Pursuits the Best Cure of Grief - p230
doi:10.1038/scientificamerican04081848-230e