Ecologist Garrett Hardin never minced words in presenting his unvarnished view of humanity's impact on the planet. And he was no less direct in planning his death. On 14 September he and his wife committed suicide at their home in Santa Barbara, California. Hardin was 88, and his wife Jane was 81. Both were in very poor health. Hardin is best known for his 1968 article in Science, "The Tragedy of the Commons" (13 December 1968, p. 1243). In it he argued that if everyone had free access to common property, the resource would be lost to all. But Hardin...