The Taj Mahal, the famous ancient domed mausoleum built in 17th century in India, is suffering from air pollution with its white marble facade apparently turning yellow.

• 印度著名的17世纪古迹泰姬陵，在空气污染侵害下，白色大理石的外观逐渐发黄，政府决定使用具有美白效果的火山泥浆膜，帮助泰姬陵去除污垢，但结果却适得其反。