A black crust is decaying Humayun's Tomb in Delhi. How the air is to blame, and what can be done
For Delhi's monuments, researchers recommend regular maintenance, protective coatings and then monitoring.
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Humayun's Tomb decay
National · 2 updates
Air Pollution Accelerating Decay Of Humayun's Tomb: IIT Study
Humayun's Tomb, built in the 16th century by Empress Bega Begum in memory of Mughal emperor Humayun
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