In news: Delhi chief minister Arvind Kejriwal attended the C40 Cities World Map Copenhagen through a video link and announced formation of a task force to monitor implementation of 'Clean Air Cities Declaration' signed at the meet. 

  • The C40 group was started in 2005 by the then Mayor of London, Ken Livingstone. It has 96 members. Delhi NCR, Bengaluru, Jaipur, and Kolkata are part of the C40. 
  • The C-40 network connects more than 90 of the world’s leading cities to take bold climate action and build a healthier and more sustainable future.
  • Mayors of C-40 cities are committed to deliver on the most ambitious goals of the Paris Agreement at the local level, as well as to cleaning the air.
  • C40 is a network of the world’s megacities committed to addressing climate change. C40 supports cities to collaborate effectively, share knowledge and drive meaningful, measurable and sustainable action on climate change.