In recent decades air pollution in the gritty industrial city of Agra has turned the marble yellow and threatens it with acid erosion. India is planning to install 20 gigawatts of solar photovoltaic capacity by 2022. Solar demand in Asia Pacific to skyrocket by 13.5 GW in 2013 - report http://www.ecoseed.org/renewables/solar/16156-solar-demand-in-asia-pacific-to-skyrocket-by-13-5-gw-in-2013-report http://www.juancole.com/2013/02/energy-indias-mahal.html Read the full article...