from BBC News
X-rays reveal Archimedes secrets
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Interesting to read about the life journey of a goatskin parchment who started off from bearing Archimedes' work in the 10th Century, to being recycled by monks to record Greek Orthodox prayers around the 13th Century and finally being ornamented by forgers in the 20th Century, where gold paintings of religious imagery were added so as to try to boost the value of the tome. What a life!

Amazing how the imaging technique of X-ray fluorescence made it possible for scientists to "travel" back in time by layers and reveal this "biography" of the palimpsest...