(1990; Dodds, 1997). Innovation does not just happen in rich countries: India and other developing nations have world-class economists, so some ideas do flow South to North. For example, the Brazilian city of Curitiba has evolved novel transport and waste disposal systems and ways of paying for them. One suggestion is that steady-state economics be developed to ensure that growth does not lead to serious environmental degradation. How much inroads into mainstream economics this makes remains to be seen (Booth, 1997). There has also been some greening of mainstream accountancy (Gray, 1990).