Book excerpt: Smith contends that there is no possible solution to our global ecological crisis within the framework of any conceivable capitalism. The only alternative to market-driven planetary collapse is to transition to a largely planned, mostly publicly-owned economy based on production for need, on democratic governance and rough socio-economic equality, and on contraction and convergence between the global North and South. "Smith brings an impressive command of economics and an engaging conversational style of writing. He explains and illustrates with devastating clarity the key mechanisms of capitalism that force it to grow unendingly ... In the final two chapters, Smith outlines ecological constraints necessary for any post-capitalist economy and describes ecosocialist alternatives to capitalism. The necessary changes are staggering... To that end he outlines a number of attractive and attainable features of an ecosocialist society." David Klein, Director of the climate Science Program at California State University and author of "Capitalism and Climate Change"