Such a city also would emphasize sustainable forms of mobility, such as public transportation and bicycles.

Despite a constant push for new membership, this did not prove a sustainable form of finance for the Society.

This is a highly sustainable urban form which regenerates itself; with privately owned properties.

This example illustrates how agroecosystem analysis is not required to lead a more environmentally sustainable form of agriculture.

Cycling is a totally sustainable form of transport: it creates no pollution, and minimal congestion.

In the absence of these policies, it is likely that these areas would be converted to other, less sustainable forms of land use.

Prices for oil and other limited natural resources are so high now that we have to find new and sustainable forms of energy.

The most sustainable form of travel is the train.

It is also a sustainable form of production.

This grow has mainly been caused by the shift to more sustainable forms of energy generation by governments all over the world.