A tourist from mainland poses for photo in front of a large outdoor banner with an image of the Hong Kong island skyline at the waterfront in Tsim Sha Tsui. Photo: Sam Tsang
Air pollution leading cause of cancer, World Health Organisation warns
Breathing ruled more dangerous than passive smoking, with risk highest in places like China
A tourist from mainland poses for photo in front of a large outdoor banner with an image of the Hong Kong island skyline at the waterfront in Tsim Sha Tsui. Photo: Sam Tsang