“…In the 1970s there was speculation about the possibility of environmental modification being used to cause economic or other damage to the population of an enemy (Box 3) (Goldblat, 1975;Barnaby, 1976;SIPRI, 1977SIPRIj UNEP, 1984b. Environmental warfare could, at least in principle, involve damage caused by manipulations of celestial bodies (Sullivan, 1983) or space, the atmosphere, the land, the oceans or the biota.…”