Delhi's iconic 17th-century Red Fort is facing a serious threat from Delhi's toxic air pollution, causing its iconic red sandstone walls to turn black. This phenomenon is due to the formation of ...

Delhi’s severe air pollution is leaving its stain on one of India’s most iconic monuments, with scientists warning that layers of black crust are forming on the 17th-century Red Fort and threatening ...

A joint study by Indian and Italian researchers has revealed that ‘black crusts', layers of pollution deposits containing compounds like gypsum, quartz, and heavy metals such as lead, copper, and zinc ...

A grim new scientific diagnosis has been delivered for one of India’s most cherished monuments. The 17th-century Red Fort in Delhi is being actively damaged by layers of black crust, a direct result ...

Severe air pollution in Indian capital Delhi has led to the formation of "black crusts" on the walls of the Red Fort, one of the city's most iconic Mughal-era monuments, a study has found. Researchers ...