(4) Azalea Moghrabi (8) and Marley Beamish (7) with Louie the Orangutan at the National Museum of Scotland. Photo © Duncan McGlynn

Tickets for the biggest exhibition of primate behaviour ever staged go on sale today, Earth Day, Tuesday 22 April. To mark the occasion, Louie the orangutan swung by the Grand Gallery at the National Museum of Scotland to meet Scottish primary school pupils Azalea Moghrabi aged eight and Marley Beamish aged seven. Photo © Duncan McGlynn Azalea Moghrabi and Marley Beamish @COLOURS

(4) Azalea Moghrabi (8) and Marley Beamish (7) with Louie the Orangutan at the National Museum of Scotland. Photo © Duncan McGlynn.JPG
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Tickets for the biggest exhibition of primate behaviour ever staged go on sale today, Earth Day, Tuesday 22 April.  

To mark the occasion, Louie the orangutan swung by the Grand Gallery at the National Museum of Scotland to meet Scottish primary school pupils Azalea Moghrabi aged eight and Marley B