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[Comment] The need for a global health ethic

In the 1940s, the renowned Wisconsin, USA, conservationist Aldo Leopold wrote “The Land Ethic” as the culmination of his now celebrated work, A Sand County Almanac.1 In his essay, Leopold articulated the need for, and the ethical basis of, a new relationship between people and the land. He imagined the awakening of an ecological conscience that redefines humanity as part of nature, rather than its external conqueror. The dire conservation challenges he observed—soil erosion, water pollution, and wildlife loss—required solutions based not merely on ecological expediency, but on ethical conviction.