One year after the critical Paris Climate Agreement, global mayors from the world’s megacities met in Mexico City from 30 November to 2 December 2016 at the C40 Mayors Summit to commit to turn the climate deal agreed by nation states from aspiration to action.

The mayors welcomed Anne Hidalgo, Mayor of Paris, as the group’s new chair and discussed findings from Deadline 2020: How Cities Will Get the Job Done, the critical research released by C40 in partnership with Arup. According to this report, in order to meet the Paris Agreement target to keep global warming below 1.5 degrees Celsius, the world’s megacities must act to peak emissions by 2020 and then nearly halve carbon emissions for every citizen in a decade, from an average of 5t CO₂e per citizen today to around 2.9t CO₂e per citizen by 2030.As the C40 Mayors Summit demonstrated, cities are already committed to cleaner, lower carbon cities because it is the best way to improve their citizens’ standards of living.

According to Deadline 2020, this leadership from C40 cities is also critical to deliver the Paris Agreement. If all cities of 100,000 people or more act on the recommendations in the report, the world will achieve 40% of the emissions reductions necessary to avoid catastrophic climate change.Paris Mayor Anne Hidalgo, C40 Chair-elect, said: “Cities are rising to the climate challenge. They are engaging with each other, working together, weaving a web above and beyond national and cultural differences. We need to bring in citizens and the private sector. We must reach the leaders of global finance, to join us in bringing about the energetic and ecological shift towards a climate safe world.” Michael R. Bloomberg, UN Special Envoy for Cities and Climate and President of the Board of C40, said: “In order for the world to reach the goals of the Paris agreement, cities and their mayors must lead the way - and they are, because they understand the major economic and public health benefits of fighting climate change.

C40's new report will help to accelerate that work and spread success to more cities around the world.“Deadline 2020 key recommendations include:
  • The need to ramp up action
  • Greater opportunity for the buildings and transit sectors
  • Smart urban planning can make all the difference
  • Partnerships and collaboration will be key
For further information, please visit the relevant C40 Cities webpage here.