Air pollution is one of the leading causes of health complications and mortality worldwide, especially affecting lower-income groups, who tend to be more exposed and vulnerable. This study documents the relationship between ambient air pollution exposure and poverty in 211 countries and territories.... Using the World Health Organization’s (WHO) 2021 revised fine particulate matter (PM2.5) thresholds, we show that globally, 7.3 billion people are directly exposed to unsafe average annual PM2.5 concentrations, 80 percent of whom live in low- and middle-income countries. Moreover, 716 million of the world’s lowest income people (living on less than $1.90 per day) live in areas with unsafe levels of air pollution, especially in Sub-Saharan Africa. Air pollution levels are particularly high in lower-middle-income countries, where economies tend to rely more heavily on polluting industries and technologies. These findings are based on high-resolution air pollution and population maps with global coverage, as well as subnational poverty estimates based on harmonized household surveys. more

A new report by the world’s largest humanitarian network warns that the number of people needing humanitarian assistance every year as a result of climate-related disasters could double by 2050. It estimates that the number of people in need of humanitarian assistance as a result of storms, droug...hts and floods could climb beyond 200 million annually – compared to an estimated 108 million today. It further suggests that this rising human toll would come with a huge financial price tag, with climate-related humanitarian costs ballooning more