The document summarizes the pollution problems affecting the Taj Mahal in Agra, India. Emissions from nearby industries like the Mathura oil refinery contain sulfur and nitrogen oxides that cause acid rain, corroding the marble of the Taj Mahal. This phenomenon is known as "marble cancer." The Supreme Court of India has ordered industries to switch to cleaner fuels and for monitoring stations to be set up to measure air quality. The court case M.C. Mehta vs. UOI & Ors aimed to address the pollution issues impacting the Taj Mahal. The government has since implemented various actions and regulations to help protect the historic monument from further damage by air pollution.