The Review is pleased to give hospitality to CLARE group articles, but is not necessarily in agreement with the views expressed; responsibility for these rests with the authors. Members of the CLARE Group are M.J. Artis, A.J.C. Britton, W.A. Brown, W.J. Carlin, J.S. Flemming, C.A.E. Goodhart, J.A....

We all recognise environmental problems-the pollution of air and rivers, the destruction of rain forests, global warming. The article argues that environmental problems are less the result of inappropriate values than of an incorrect calculus, and that economic evaluation and economic...