”Làm Sạch Bầu Trời Phía Trước!” Nỗ Lực Toàn Cầu Hướng Tới Một Xã Hội Không Khói

Traveling to China ‘s capital Beijing is exciting! The Forbidden City, the Great Wall, and Tiananmen Square are among the many great spots for sightseeing! But, more frequent than ever, people in Beijing are having difficulty seeing beyond 50 meters. What causes this low visibility? It’s smog, a kind of air pollution that contains a mixture of fog and smoke particles.