Learn the key differences between fog and smog, their causes, effects, and health risks. Discover how to stay safe from polluted air and harmful smog.

Fog and smog may look similar at first glance, but they are very different in origin, composition, and impact on health. While fog is a natural weather phenomenon, smog is a harmful, human-made ...

SHANGHAI (Reuters) - Air pollution has caused an estimated 49,000 deaths and $23 billion in economic losses in the cities of Beijing and Shanghai alone since Jan. 1, 2020, according to a "clean air ...

BEIJING (Reuters) - Heavy smog in northern China on Sunday caused hundreds of flights to be cancelled and highways to shut, disrupting the first day of the New Year holiday. Large parts of the north ...