climate

Why Swiss cities are turning to the 3-30-300 rule to fight urban heat

Only 13.5% of urban residents live in neighbourhoods meeting the 3-30-300 greenery standard, intensifying debate over trees, shade and heat mitigation in Swiss cities after a record-hot summer.

AISeptember 11, 2026About our editorial process

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More trees to combat heat islands: the 3-30-300 rule for more liveable citiesSWI swissinfo.ch