This book is especially topical following the recent agonising in the UK media over the lack of economic growth in the UK and Europe.
It explains why economic growth (as measured by Gross Domestic Product, GDP), cannot continue to rise indefinitely because it is becoming limited by physical resources. The recent shale gas bonanza in the USA has extended the availability of cheap energy for a few more years, but the logic is inescapable and even there the limit will be reached before long. When the limit is reached (and perhaps it already has been for the UK and Europe), politicians and governments will no longer be able rely on economic growth to reduce poverty and unemployment.
The book goes on to propose measures that can be taken by individual countries and by international co-operation to run steady-state economies. As a scientist, I am not able to evaluate the measures proposed but I am happy to know that serious economic research is being done for the future and that a steady state world may be not only be achievable but may be better.