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The sponsors of next week's conference at Geneva on climate change, the World Meteorological Organization and the UN Environmental Programme, should be careful not to push their luck by demanding too quick a treaty.
Proposals for the siting of toxic waste plants often meet local opposition. This hurdle could be overcome if local governments were to place 'compensation' bids for burying waste, while maintaining environmental standards.
Chaotic data in the strict sense cannot usually be demonstrated to be such by computer simulation, if only because of the unavoidable rounding errors of computation. But now there may be a solution of the difficulty.
