Reletter
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A newsletter covering the C40 Centre's latest thought pieces, updates on our peer-reviewed journal and the Cities 1.5 podcast.

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Substack
PricingOnly free issuesPublishesWeekly
Issues72Founded4 years agoLast Issue3 days ago
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Latest Issues

The urban economics of data centres

Global internet searches for “data centre” were five times higher in the last twelve months than in the preceding year. For the better part of the last thirty years, data centres have been the largely ignored backbone of our digital infrast...

3 days ago
3

London lessons amid Canada’s recurring pipe dreams

I’ve just returned to Canada from London Climate Action Week. It was wonderfully uplifting to be a part of the largest climate week ever, with incredible climate action on show, particularly by cities. But how sad it was to return to Canada...

9 days ago
4
1

Adaptation and resilience in cities of the majority world, a special issue

📅 Urban climate action beyond templates: a Majority World manifesto. 24 June 2026, 11.30 (UTC+3) Watch live

The Journal will have a presence at Innovate4Cities Conference in Nairobi, Kenya on 21–24 June 2026. There is time to register...

a month ago
2

Sustainable prosperity in the 21st century city & more from our Journal

I am pleased to share the Special Issue on Special Issue on Sustainable Prosperity in the 21st-Century City as well as the latest, open-call issue of the Journal of City Climate Policy and Economy.

The Journal of City Climate Policy and Ec...

3 months ago
6

Cities and the data centres investment boom

History warns us against allowing private sector interests to dictate the layout and pace of the development of critical networks, especially during an investment boom or hype cycle. Data centres are currently experiencing such a boom globa...

4 months ago
8

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Authors

The writers behind this newsletter.

  • David Miller
  • Francesco Mellino

    Senior Ecological and Wellbeing Economist at C40 Cities.

  • Chiara Morfeo

    Senior Manager for Research and Communications at the C40 Centre for City Climate Policy and Economy. Prior to joining C40, Chiara worked in communications at University College London and the UNECE.

  • Quinn Adams

    Scholar in Residence for climate and health at the C40 Centre for City Climate Policy and Economy. Quinn holds a PhD in Environmental Epidemiology from Boston University and is a postdoctoral research associate with CIRES.

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