As the World Heats Up, Cities Work to Cool Down

Source: DW- top storiesCities are especially prone to extreme heat, experiencing days when the sidewalks seem to cook like a stove and nights when it's a struggle to sleep. Densely built urban areas, with their paved roads and limited green spaces, are heat islands that can be up to 30 degrees hotter than surrounding rural areas. That extra heat harms public health, contributing to nearly half a million deaths each year from heat-related causes, according to U.N....