If countries across the globe are to succeed in their ambitions to drive sustainability and combat climate change, there will be a big emphasis on major cities making significant progress.
This point was recently emphasised by the C40 Cities Climate Leadership Group, which brings together more than 90 locations across the globe housing over 650 million people and representing a quarter of the global economy.
It stressed that major cities are "critical" to delivering on ambitions such as the Paris Climate Agreement, which set a target to limit global temperature increases to 1.5 degrees C.
The group said mayors of the biggest cities are prepared for the challenges ahead and ready to take the actions required to build a sustainable future.
Certain key measures are included within the C40 participation standards, such as setting a target for reducing greenhouse gas emissions, developing a climate action plan with clear initiatives to meet the target, and actively sharing best practices with other cities.
To reflect the progress made on these and other fronts over the past year, C40 announced the best-performing cities in different global regions in 2017. The results were as follows:
3) Cape Town
Central east Asia
1) Hong Kong
East, south-east Asia and Oceania
1) Mexico City
2) Buenos Aires
3) Rio de Janeiro
1) New York City
2) Los Angeles
South and west Asia
In a blog post announcing the results, C40 said: "These leading cities were extraordinarily active in the C40 network throughout 2017, and took exceptional measures and contributed additional resources to support the sharing of best practices among cities, provide thought leadership, and represent the C40 network globally."
The group encouraged all cities around the world to further increase their participation in the sort of initiatives taking place in these locations.
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