Lisa Hoffner / Hungry orphan elephants (Loxodonta africana) greet the milk delivery trailer. David Sheldrick Wildlife Trust Nairobi Elephant Nursery, Kenya, April 2007. Model released

David Woodfall / Couple with dog with numerous camper vans on East Beach, threat to nesting Little terns (Sterna albifrons). Ferry to Harris in the background, North Uist, Scotland, UK, June.

Ashley Cooper / House in Fairbanks Alaska moved after it started collapsing into the ground due to global warming induced permafrost melt. August 2004

Ashley Cooper / Chinese farmers hauling a huge wide load of wood using a tiny tractor in Heilongjiang province, Northern China. March 2009.

Ashley Cooper / Chinese farmers hauling a huge wide load of wood using a tiny tractor in Heilongjiang province, Northern China. March 2009.

Ernie Janes / Wheat harvesting - grain transferring from combine harvester to trailer, Walsingham, Norfolk, England, UK. August

Ernie Janes / Wheat harvesting - grain transferring from combine harvester to trailer, Walsingham, Norfolk, England, UK. August

David Pattyn / Workers returning from Sisal plantations in tractor and trailer along dirt track, Berenty Private Reserve, southern Madagascar, August 2016.

Kristel Richard / Canadian Horse gelding pulls a trailer, at Upper Canada Village Museum, Morrisburg, Ontario, Canada. Critically Endangered horse breed.

Inaki Relanzon / Nomadic family moving to summer place. With children playing in tractor with trailer and vans loaded with possessions. Khongor Sand Dune, Govi Gurvan Saikhan National park, Gobi desert, South Mongoli...

Nick Upton / Jenny Lewis watching rescued Grey seal pups (Halichoerus grypus) peering from a trailer on a beach on release day, after recovering from their injuries through treatment and rehabilitation at the Corn...

Nick Upton / Rescued Grey seal pups (Halichoerus grypus) peering from a trailer on a beach on release day, after recovering from their injuries through treatment and rehabilitation at the Cornish Seal Sanctuary, N...