In a joint letter the mayors asked for a peak in emissions by next year, more than halving emissions by 2030 and a net zero EU by 2050.
This letter came just a few days ahead to the EU Council meeting in Sibiu, where the EU leaders will discuss the EU's next strategic agenda for the period 2019-2020. Many signatories of the Covenant of Mayors joined the call.
The city networks involved will continue to use the letter and collect signatures in the coming months, leading up to the Sustainable Development Goals meeting at the UN in New York this September.
Read the full letter here
Picture credits: Mätes II. CC BY-SA 3.0