School, classroom, 7 year old, parents and pupils talking and walking around, Graz, Austria

University lecture room, small crowd, wooden seats that crack and fold up and down, Basel, Switzerland

University, hallway, large student crowd, talking, Basel, Switzerland

School, cleaning staff, great hallway, vacuum cleaner from 2min, furniture being moved, pupils, people talking, Basel, Switzerland

University campus, EXT, entrance doors, students and scientific staff walking by, talking, aeroplane, distant traffic and construction site, New York City, USA

Hall, large, reverberant space, distant voices, footsteps, whispers, talking, New York City, USA

University campus square, fountain, people walking by, talking, distant plane, students, New York City, USA

University campus, birds, airplanes, people walking by, talking, student life, New York City, USA

University hallway with carpet, wooden lockers, close to elevator, people walking by, talking, trolley rolling, New York City, USA

University hallway with doors, reverberant, stairs, people talking, walking by, doors, New York City, USA

University, hallway, people walking by, talking, wooden door slamming, New York City, USA

Primary school, hallway, some pupils and teachers, Graz, Austria

University, hallway, distant conversation, Ibiza, Spain

School, pupils, teenagers, teacher, walking by, talking, laughing, shouting, younger children playing in background, distant traffic, Ibiza, Spain

School, pupils, pre-teens, walking by, talking, laughing, squealing, younger children playing in background, distant traffic, Ibiza, Spain

School playground, children playing, shouting, traffic, cars passing by, distant vacuum cleaner, Ibiza, Spain