Severe fine dust pollution over Seoul and Mexico City, being composed of the same type of fine particulate matter (PM2.5), exhibits markedly different characteristics. Seoul's air tends to reflect ...

Air pollution caused tens of thousands of deaths in the world's five most populous cities last year despite coronavirus ...

In the 1980s, the air over Mexico City was so toxic that birds dropped dead in mid-flight and fell from the sky. By 1992, burgeoning population, choking traffic, and explosive industrial growth had ...

Beijing (cars/coal), and LA (smog check) drastically cut pollution levels, offering key lessons for India's capital.

MEXICO CITY (AP) — Ecologists from Mexico’s National Autonomous university on Friday relaunched a fundraising campaign to bolster conservation efforts for axolotls, an iconic, endangered fish-like ...