China plans a new city worth $290 billion near Beijing – Click HERE for the link.
Relating to Market Failure, see the spec references below:-

Edexcel spec reference (Click here to see APT resources for Edexcel AS and AL Economics)
1.3.1                Types of market failure
1.3.2                Externalities
AQA spec reference (Click here to see APT resources for AQA AS and AL Economics)             The meaning of market failure             Positive and negative externalities in consumption and production