Air pollution - People move through a dusty construction area on Kim Dong Street, Hai Ba Trung District, Ha Noi.
Lam Gia Khanh, 12 years old (right) and his cousin Lam Thanh Dieu, 10 years old (left), Khmer students from Long Phu A primary school (Long Phu district, Soc Trang province, Viet Nam) feel happy to complete their school day and go back home. They live about 4km away from their school and go to school by Khanh’s bicycle every day.