Haze is an atmospheric phenomenon where dust, smoke and other dry particles obscure the clarity of the sky.
PM2.5, particles less than 2.5 micrometers in diameter, are referred to as "fine" particles and can lodge deeply into the lungs. People believe they pose greater health risks than larger particles.
The following 20 green plants could help clean the air.
![]() |
16 Chinese films with a Cannes Award
Best photos of the week (May 5 - May 11)
Opening ceremony of 67th Cannes Film Festival
Silent world of EOD personnel
Who is China's campus beauty queen?
School for juvenile offenders behind bars
Dance competition in Guizhou attracts more than 3,000 enthusiasts
Golden wedding celebration in Chongqing
China's J-11 fighters in actual-combat training
Six years after Wenchuan earthquake
Day|Week|Month