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The engine of coal's demise would be the same invention that was created to conserve it: the steam engine. But it made burning coal so efficient, that instead of conserving coal, it drove the price down until everyone was burning it. This is Jevons' Paradox: the more efficiently you use a resource, the more of it you will use. Put another way: the better the machine--or fuel--the broader its adoption.

A coalition of corporations and other organisations has launched a new global non-profit initiative aimed at tackling the “unprecedented challenges of urbanisation” and the need for economic, environmental and social sustainability.