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Tens of thousands of migrants continue to make the difficult and dangerous journey by sea and land to get to Europe, escaping war or poverty. Audrey Tinline reports on how mobile phone technology has both driven the patterns of migration currently taking place and allowed migrants to make decisions when they arrive in Europe about where they should go next.

Also, Jeremy Wagstaff, Reuters chief technology correspondent for Asia, explains how websites may be monitoring our online activity. And we speak to Philippe Mellier, chief executive of De Beers, about creating a market for diamonds in China and elsewhere.

(Photo: Two migrant men use a mobile phone in a tent near Idomeni in Greece; Credit: Joe Klamar/AFP)