Kirkendall-Spring / Hiker crossing Newton Creek, Elk Meadows Trail, Mount Hood Wilderness. Oregon, USA, July 2014. Model released.

Floris van Breugel / Black and white photograph of Ice crystals up to 12 inches long along a small creek in a remote valley, Brooks Range, Gates of the Arctic National Park, Alaska, August 2014.

Peter Cairns / Calcified trees at Tangled Creek in winter, Yellowstone National Park, Wyoming, USA, February 2013.

Charlie Summers / Two juvenile Brown Bear siblings (Ursus arctos) look for food on the banks of the Anan Creek lagoon, Alaska, July.

Charlie Summers / Black Bear (Ursus americanus) hunting for spawning Salmon during low tide, Neets Creek estuary, Alaska, July.

Oriol Alamany / Nigel Creek with conifer forest at dusk, Banff National Park, Rocky Mountains, Alberta, Canada

Niall Benvie / 2020VISION / Thrift (Armeria maritima) flowering on saltmarsh at the south end of Achnahaird Bay, Coigach and Assynt, Sutherland, Scotland, UK, June 2011

Niall Benvie / 2020VISION / Thrift (Armeria maritima) flowering on saltmarsh at the south end of Achnahaird Bay, Coigach and Assynt, Sutherland, Scotland, UK, June 2011. 2020VISION Book Plate.

Jack Dykinga / West Fork Oak Creek at base of Supai sandstone cliffs, mixed forest of oak, maple and conifers in background, Coconino National Forest, Arizona

Phil Savoie / Water flowing out of the Hyalite Resevoir, Hyalite Creek, Gallatin National Forest, Bozeman, Montana, USA. March

Phil Savoie / Water flowing out of the Hyalite Resevoir, Hyalite Creek, Gallatin National Forest, Bozeman, Montana, USA. September

Juergen Freund / Creeks / streams in spate due to heavy rainfall, Daintree rainforest, Queensland, Australia. December 2015