In one of the earliest references to the tragedy of the commons—a concept that describes how people use natural resources to their advantage without considering the cost to society—the economist William Forster Lloyd asked in 1833, “Why are the cattle on a common so puny and stunted? Why is the common itself so bare-worn and cropped so differently from adjoining enclosures?”

“When summer and winter separate,” wrote Hildegard of Bingen circa 1158, “so that either summer recedes and winter arrives or winter recedes and summer arrives, then a certain mixed substance appears, flying in the air, like a whiteness of threads, where the air is purifying itself.”

In 2012 a revenue office in Uttar Pradesh received an official-looking notice addressed to the Hindu storm god Indra, ordering the deity to provide written justification for a drought caused by insufficient rain during that year’s monsoon season. “If the Lord fails to give a satisfactory explanation within the stipulated period,” the notice warned, “it will be presumed that he has nothing to say, and stern action will be taken.”