Expand and target urban tree canopy on the hottest, lowest-canopy streets
#00006
Plant and steward trees, prioritizing the specific streets that heat-mapping shows are hottest and have least canopy. Trees cut surface and air temperature through shade and evapotranspiration, and also reduce stormwater runoff.
Paris, France
OngoingBegun in 2018 as part of Paris's Climate Adaptation and Resilience Strategy, "Les Cours Oasis" depaves asphalt schoolyards and replaces them with trees, permeable ground, shade and water features, then opens them as nei…
Singapore
SuccessSince the 1960s 'Garden City' vision and now the 'City in Nature' / Green Plan 2030 strategy, Singapore grew green cover from 35.7% (1986) to roughly 48% even as urban density rose. Key mechanisms: mandatory greenery re…
Medellín, Colombia
SuccessLaunched in 2016 to counter urban heat island effects and severe air pollution in the Aburrá Valley, Medellín built 30+ interconnected 'green corridors' (corredores verdes) along road verges, streams, parks and hillside…
Freetown, Sierra Leone
Ongoing#FreetownTheTreeTown is a community-driven reforestation program in a rapidly urbanising coastal city that lost roughly 12% of its canopy per year between 2011 and 2018, raising landslide and flood risk. Community growe…