Urban heat islands have solutions; many tropical cities can’t afford them

Urban heat islands pose a growing global health threat.

But in tropical cities, the peril is surging.

Already burdened by hot-humid equatorial weather, global warming, intense poverty, rapid urbanization, and a lack of cooling infrastructure, tropical city officials now face a powerful 2026-2027 El Niño that could put millions of vulnerable urban dwellers at risk. […]