Cycle of Fire is the 1957 novel by Hal Clement about the adventure of a stranded human, Nils Kruger, on the planet Abyormen, the only planet of the dwarf star the natives call Theer which is the binary with the giant star Arren. The loose jointed Abyormenites come in two sizes: "people" who are 4 and one-half feet tall and "teachers" who are 8 feet tall. Kruger learns that the two seasons on Abyormen - cold and hot - last 40 Earth years, and that the intelligent cold season natives he has met experience a collective death much like the periodic mass deaths of bamboo species on Earth. Their deaths and the growth of the seemingly more primitive hot season fauna are crucial to their reproduction cycle.

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