Paris is the 4th greenest city in the world and in 3rd place for air quality.

Paris has taken its commitment to sustainable development further by developing its own Agenda 21. The Paris Climate Plan aims to reduce greenhouse gas emissions by 75% by 2050.

Residents and visitors are encouraged to use non-polluting modes of transport:
- The tram service came into operation in December 2006.
- The city’s self-service bicycle hire scheme, called Vélib’, was introduced in July 2007.
- Voguéo, the new “waterborne métro”, has been launched in 2008.

New ! The Paris City Council is planning to launch Autolib’, a free “clean car” hire system, in 2010-2011.