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Watch BBC Journey From The Centre Of The Earth online: Episode 3 Art

This programme relates rocks and geology to the use of pigments in art. Early cave painters began by scraping their colours from rocks on the Earths surface, but civilisations like the Egyptians and Arabs developed ingenious techniques to transform rocks and dramatically broaden the range of their palettes. Bringing this story up to the present day, Iain shows how advances in our understanding of rocks has given each generation of artists new potential.

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