The implications of the IPCC's findings were then, and remain now, beset with uncertainties. They made projections of the likely rate of warming, and the implications of this, but the relevant point here is simply that the implications were sufficient to generate some action from the world's governments. Michael Grubb summarises the salient point well: 'all that can be usefully said is that the less the rate of atmospheric change, the less the risks and costs are likely to be' (Grubb, 1990:12). The potential implications include: sea level rise (the IPCC projected a rise between 3 and 10 cm per decade on a 'business-as-usual' basis); drastically changed rainfall patterns (some parts of the world getting much more, others much less rainfall); agricultural migration as crops move towards the poles; changes in zones in which major diseases would be located; significant regional changes in potential agricultural yield; and potentially large numbers of environmental refugees.11

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