Philippe Clement / Woodpiles amongst flowering Bluebells (Hyacinthoides non-scripta) in beech woodland, Hallerbos / Halle forest, Belgium, April.

Ashley Cooper / Truck hauling freshly cut timber for biofuel in Grizedale forest, Lake District, England, UK, May 2013.

Ashley Cooper / A forwarder, a specialist machine for cutting timber for biofuel in Grizedale Forest, Lake District, England, UK

Ashley Cooper / The Steven's Croft biofuel power station in Lockerbie, Scotland, UK, witha delivery of timber entering the site.

Ashley Cooper / The Steven's Croft biofuel power station in Lockerbie, Scotland, UK.

Ashley Cooper / The Steven's Croft biofuel power station in Lockerbie, Scotland, UK.

Steve O. Taylor (GHF) / Panning shot of charcoal mounds and felled timber along the edge of a main road, Mozambique, 2014.

Steve O. Taylor (GHF) / Stacks of various felled hardwoods in a timberyard, awaiting export to China, Mozambique, 2014.

Steve O. Taylor (GHF) / Products made from sustainably felled forest timber for sale at Mezimbite Sustainable Forest Camp, Mozambique, 2014.

Nick Turner / Timber stacked up for seasoning at a sawmill at Buckholt Woods, Gloucestershire, UK. March.

Staffan Widstrand / Subsistence farmer standing in front of log pile, Musteika Village, Lithuania, May 2015.

Olga Kamenskaya / Stacked timber, Zabaikalsky National Park, Lake Baikal, Siberia, Russia, September 2013.