10 diciembre 2014
The Taj Mahal’s iconic marble dome and soaring minarets require regular cleaning to maintain their dazzling appearance, and scientists now know why. Researchers are pointing the finger at airborne carbon particles and dust for giving the gleaming white landmark a brownish cast.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/bnXLXPHm4Fs/141210095858.htm
