In Christopher Chyba's article “Origins of life: Buried beginnings” (Nature 395, 329–330; 1998) the proposal that life could have originated at hydrothermal vents, because of the chemical reducing power of iron and nickel sulphides present at such sites, should have been attributed to G. Wächtershäuser, Microbiol. Rev. 52, 452-484 (1988).