Close up view of an unidentifiable trader writing on a note pad then passing the note to a dealer in the busy trading pit of the International Petroleum Exchange in London, England.

Berlin, Germany: Close view of coloured graffiti and writing on part of the Berlin Wall saying "Dancing to Freedom", then camera pans down to show writing along bottom saying "No More Wars".

Beijing, China: Anonymous back view of teacher writing in Mandarin on blackboard in a school.

Berlin, Germany: Close views of white crosses by the River Spree in memory of victims of the Berlin Wall, showing the names of Hans Rawel and Klaus Schroter with the dates they died.

Berlin, Germany: Two women walk along part of Berlin Wall with graffiti saying "Curriculum Vitae" surrounded by numbers representing years in time.

Weather sign saying 'Cloud' hanging in primary school classroom, camera pans to school children sat around table as young female teacher approaches them with plates.

Berlin, Germany: Close view of warning sign at Checkpoint Charlie.

Berlin, Germany: Close view of the World Clock (Weltzeituhr) on Alexanderplatz, showing words cut out of the panels on the clock naming cities in Russia, then camera pans down to show the numbers 13 and 14 on panels below.

Berlin, Germany: Camera pans across side panels on the World Clock (Weltzeituhr) on Alexanderplatz showing large numbers along the middle with names of cities in the world written above and below.