Aridness -

: Arid cities often have very low tree cover (averaging 1.5%), but researchers from The Nature Conservancy suggest that targeted urban greening could reduce local air temperatures by up to 1.2°C.

This report explores the concept of —long-term climatic dryness—as a silent but powerful force reshaping the planet's landscapes and societies. The Global State of Aridity aridness

Cities in arid regions, such as Phoenix, Athens, and Kabul, face unique existential threats. : Arid cities often have very low tree cover (averaging 1

: Aridness is typically measured using the Aridity Index , which calculates the ratio of annual rainfall to potential evaporation. Biological Resilience: "Weird" is Effective such as Phoenix