Magnus Lundgren / Wild Wonders of China / Fish and mussel farms with ferry and city skyline in background. Zhifu Island, Shandong Province. Bohai Sea, Yellow Sea, China. September 2017.

Magnus Lundgren / Wild Wonders of China / Fish and mussel farms with city skyline and hills in background. Zhifu Island, Shandong Province. Bohai Sea, Yellow Sea, China. September 2017.

Pat Tuson / Riverford Organic Farms Van on its way to deliver veg / vegetable boxes, Tottenham Court Road, Central London England, UK, December 2013,

Claudio Contreras / Mexican marigold (Tagetes erecta) grown in a chinampa, a wetland agricultural system, grown in preparation for the day of the dead festival, Xochimilco wetlands, Mexico City, October

Claudio Contreras / Mexican marigold (Tagetes erecta) grown in a chinampa, a wetland agricultural system, grown in preparation for the day of the dead festival, Xochimilco wetlands, Mexico City, October

Claudio Contreras / Mexican marigold (Tagetes erecta) grown in a chinampa, a wetland agricultural system, grown in preparation for the day of the dead festival, Xochimilco wetlands, Mexico City, October

Pat Tuson / People looking over a fence at a Tamworth pig in Hackney City Farm London, England, UK, March 2011

Pat Tuson / Hackney City Farm Sign London, England, UK

Pat Tuson / Group of people looking over fence at a Tamworth pig Hackney City Farm London England UK, March 2011

Alex Hyde / Gloucestershire Old Spot piglets (Sus scrofa domestica) suckling from sow. Stonebridge City Farm in central Nottingham, UK, October.

David Woodfall / Teenagers looking at two young piglets in community city farm, Swansea, Wales, April 2009.

David Woodfall / Teenager stroking a young piglets in community city farm, Swansea, Wales, April 2009.