This book is the second edition of a text based on a report commissioned by the Swedish International Development Authority (SID A). The financial grant from SIDA which made the work possible is hereby gratefully acknowledged. There are already many books on the market about environmental economics, some of them very good. What is special about this one? We do not claim to have obtained new results, but we have our own way of presenting the subject matter. In particular, we are of the opinion that policy failures are often overlooked as an obstacle to efficient environmental management....