Phát thải xe gắn máy: Thủ phạm gây ô nhiễm không khí
Thống kê năm 2006 của Tổ chức Y tế thế giới cho biết, đã có khoảng 777.000 người (châu Á là 531.000 người) chết do ô nhiễm không khí. Phát thải xe gắn máy là một trong những nguyên gây nên tình trạng này.
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