Anup Shah / Alpha male 'Frodo' displays 'keep away' message to begging chimps wanting share of Bushbuck fawn prey {Pan troglodytes schweinfurtheii}, Kasekela community, Gombe NP, Tanzania. 2002
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Pat Tuson / Marble Arch replica built from litter collected from nearby Oxford Street and which will hopefully be recycled when the structure is dismantled, Central London UK November 2011
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Pat Tuson / Marble Arch replica built from litter collected from nearby Oxford Street which will hopefully be recycled when the structure is dismantled, Central London UK November 2011
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Pat Tuson / Marble Arch replica built from litter collected from nearby Oxford Street and which will hopefully be recycled when the structure is dismantled, Central London UK, November 2011
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Pat Tuson / Waste collection vehicle with environmental recycling message, Highbury, London Borough of Islington, UK
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Pat Tuson / Be Bright Turn Off the Light, written on the lavatory wall at Hackney City Farm, London, England UK
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John Cancalosi / Sign on farm 'Have you ate today - thank a farmer' Upstate New York, USA. January 2000
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Niall Benvie / Spoof warning sign about scarcity of cod in the sea, Aberdeenshire, Scotland, UK