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NATO ships deployed to tackle people smugglers; An interview with one of the greatest ever long distant runners, Ethiopia's Haile Gebreselasie; World waits for proof of the existence of gravitational waves, first suggested by Albert Einstein almost a hundred years ago.

(Picture: A German ship leaves the navy base in Wilhelmshaven to join patrols in the Aegean Sea. Credit: Ingo Wagner/dpa via AP)