Firefighters continue to make progress in containing the massive Hughes Fire that broke out Wednesday near Castaic Lake, ...

The country is also seasonally affected by smoke from fires lit by farmers across South-east Asia. Read more at ...

A thick fog of pollution envelops Sarajevo for the second day. Experts are warning of the health risks associated with poor ...

Air pollution in the Thai capital forced more than 350 schools to close on Friday, city authorities said, the highest number in five years. Bangkok officials also announced free public transport for a ...