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Duration: 59 minutes

on BBC Four

Available for 2 months

Dr James Fox explores how the arrival in Europe of lapis lazuli turned blue into an exotic colour. Artists began to use it to offer us glimpses of worlds beyond our own. Show more

Documentary following a team of underwater archaeologists and experts as they use CGI to reveal the secrets of Pavlopetri in Greece, the world's oldest submerged city. Show more

Duration: 59 minutes

on BBC Four

Available for 2 months

Dr James Fox explores how the arrival in Europe of lapis lazuli turned blue into an exotic colour. Artists began to use it to offer us glimpses of worlds beyond our own. Show more

BBC Four

About BBC Four

BBC Four reflects arts, music and culture with an ambitious range of intellectually and culturally enriching programmes, taking an expert and in-depth approach to its subjects.

About this data

This data is drawn from the data stream that informs BBC's iPlayer and Sounds. The information shows what was scheduled to be broadcast, meaning it was/is subject to change and may not be accurate. More