Jack Dykinga / Sun shining through mesquite bosque forest with lush winter rain-fed grasses covering the forest floor at sunset, Catalina State Park, Arizona. February 2014.

Sandra Bartocha / Silver birch (Betula pendula) and Scots pine (Pinus sylvestris) trunks in snow, Muritz-National Park, Germany, January.

Ross Hoddinott / The Northern Lights / Aurora Borealis over a river, Vik, Iceland. February 2014.

Juergen Freund / Bioluminescent fungi (Omphalotus nidiformis / Pleurotus nidiformis) glowing on tree trunk in rainforest at night, Atherton Tablelands, Queensland, Australia,

Paul D Stewart / Illustration of vivid colour lithograph for 'Dr. Schubert's Naturgeschichte - Geologie, Mineralreich, Palaontologie'. Published 1888 in Stuttgart by J.F. Shreiber, the palaeontology section by Dr. Fri...

Peter Cairns / 2020VISION / View up through canopy of Silver birches (Betula pendula) in winter, Insh Marshes, Cairngorms NP, Highlands, Scotland, UK, December. Photographer quote: "Fingers and toes might protest at -15c, but on...

Chadden Hunter / Dallol hot springs where water heated by magma laden with potassium, sulphur and iron spews up through salt pans staining the salt deposits with vivid colours, in the bottom of the Rift Valley, 120 me...

Phil Savoie / European Greenfinch (Chloris chloris) flying at dawn. When backlit the tiny transparent barbs that make up the feather act like a prism revealing vivid colours in the early light. Monmouthshire, Wales...

Phil Savoie / European Greenfinch (Chloris chloris) flying at dawn. When backlit the tiny transparent barbs that make up the feather act like a prism revealing vivid colours in the early light. Monmouthshire, Wales...

Phil Savoie / European Greenfinch (Chloris chloris) flying at dawn. When backlit the tiny transparent barbs that make up the feather act like a prism revealing vivid colours in the early light. Monmouthshire, Wales...