Earth Day At 50 — A Planetary Warning
In 1905, a year before he died, Nathaniel Southgate Shaler published a highly regarded book that advocated “a change in the point of view from which we commonly regard the resources of the earth.” In Man and Earth the famed Harvard scientist described the sun, clouds, soil, and water as a kind of life-giving membrane, a placenta, from which Mother Earth sustains all living creatures. Mindful of the coal dug out of the Appalachians, timber …