Background
The built and natural environment and health are inextricably linked. However, there is considerable debate surrounding the strength and quality of the evidence base underpinning principles of good practice for built and natural environment design in promoting health. This umbrella review aimed to assess relationships between the built and natural environment and health, concentrating on five topic areas: neighbourhood design, housing, food environment, natural and sustainable environment, and transport.

In April 2010 the Tokyo Metropolitan Government launched the Tokyo Cap-and-Trade Program to reduce energy consumption-related CO2 emissions at the city level. This is the world's first cap-and-trade programme to cover buildings in the commercial, industrial and public sectors. Its main aim is to reduce CO2 emissions from energy consumption in existing buildings in urban areas; therefore, it is called an ‘urban cap-and-trade programme’.

The Shenzhen ETS is the first urban-level “cap-and-trade” carbon emissions trading scheme to operate in China. This paper gives an overview of the economic and emissions situation in Shenzhen and focuses on the development of the Shenzhen ETS regulatory framework. It is devised as an ETS with an intensity-based cap, output-based allocation and a market for trading of allowances. The design of the Shenzhen ETS attaches great importance to coordinate the dynamic relationships between economic growth, industrial transition and emissions control.