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Eurozine ·Future-gazing

Greening and Blueing

by Sarah Waring

Published 2026-09-14 09:54:24+00:00

What happens when a city tears up the concrete and lets the rain soak in?

0:00 / 19:44 · Narrator Algieba

Context

When tarmac cracks and hospitals overflow during summer heatwaves, the political reflex is often to treat the soaring temperatures as an unsolvable fact of modern life. But in a piece published on 14 September 2026, Eurozine asks a more practical question: what if cities just turned the earth's natural air conditioning back on? Cutting carbon emissions is a slow fix for a sweltering apartment block. A faster solution relies on a surprisingly low-tech toolkit of wet soil and heavy shade to physically lower the thermostat in residential neighborhoods.

Show notes

An overview of how restoring natural water cycles and plant life can lower temperatures in overheating cities and rural areas. Explains the mechanics of greening and blueing—using soil moisture, reforestation, and wetland restoration to cool the air through evaporation—and surveys the progress of these projects across Germany. Details practical methods ranging from urban sponge cities and regenerative farming to the reintroduction of beavers.

Read on Eurozine →