Last year the magazine published an “Annals of Anthropology” piece by Jared Diamond titled “Vengeance Is Ours,” in which “a blood-thirsty warrior [in the New Guinea highlands] bent on avenging his uncle’s death … touched off six years of warfare leading to the slaughter of 47 people and the theft of 300 pigs.” Said warrior is now seeking $10 million in damages for libel – and one researcher is backing the plaintiff up.