A thick haze has this week smothered Beijing and surrounding areas, with tens of millions of people in northern China under severe pollution warnings.
Click here for original story, China’s smog problem explained
Source: Phys.org
A thick haze has this week smothered Beijing and surrounding areas, with tens of millions of people in northern China under severe pollution warnings.
Click here for original story, China’s smog problem explained
Source: Phys.org