Why Cities Must ‘Race to Zero’

By Mayor of Barcelona and Vice-Chair of C40 Cities Ada Colau.

Ajuntament Barcelona on Flickr. This was originally published in Metropolis on 11 October 2021.
  • Efforts to restore more than 200 public ponds in Chennai are boosting biodiversity in addition to preventing an estimated 420 kg of CO2 emissions.
  • Seoul is also one of several global cities to pursue its zero-carbon and equity goals through a Green New Deal.
  • In an impressive example of cross-city collaboration, my colleagues in Cape Town, Durban, Ekurhuleni, Johannesburg and Tshwane are also working together to develop innovative approaches to inclusive climate action.

C40 is a leading global network of cities taking bold and ambitious climate action to deliver a healthy, equitable and sustainable future for all.