Anh: Báo động tình trạng ô nhiễm không khí tại nhiều khu vực ở London
Theo một nghiên cứu vừa công bố, tình trạng ô nhiễm không khí ở những trục đường có mật độ giao thông đông đúc nhất tại khu vực West End thuộc trung tâm London đã cao gấp 10 lần so với những con đường cắt ngang nhỏ hơn chỉ cách đó vài mét.
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