Heather Angel / Giant panda (Ailuropoda melanoleuca) sliding down slope on back after losing footing. Panda Breeding Centre, Wolong, Sichuan, China. January 1987.

Christophe Courteau / Mountain gorilla (Gorilla gorilla beringei) playing, rolling down a slope, part of the Amahoro Gorilla Group, Volcanoes National Park, Rwanda.

Ingo Arndt / Rainforest slope Mount Bisoke (3711m), Mountain gorilla habitat (Gorilla gorilla beringei), Parc National des Volcans, Rwanda

Alex Mustard / Spaghetti garden eels (Gorgasia maculata) stretching up out of their burrows on a rubble slope, with Mysiid shrimp swimming around their bodies near the seabed. Dumaguete, Dauin, Negros, Philippines....

Vladimir Medvedev / Amur Leopard (Panthera pardus orientalis) on rocky slope at night, Kedrovaya Pad reserve, Primorskiy krai, Far East Russia, December, Critically endangered species.

Tui De Roy / Violet tailed sylph (Aglaiocercus coelestis) Guango private reserve, Papallacta Valley, Andean Cloud Forest, East slope, Ecuador

Tui De Roy / White bellied woodstar (Chaetocercus mulsant) three hovering around red flowers, Guango private reserve, Papallacta Valley, Andean Cloud Forest, East slope, Ecuador

Juan Carlos Munoz / Walia ibex (Capra walie) silhoutted on a rocky slope. Simien mountains, Ethiopia, Feb 2010

Igor Shpilenok / Kamchatka brown bear (Ursus arctos beringianus) on slope, Kronotsky Zapovednik, Kamchatka, Far East Russia

Dong Lei / Alpine musk deer (Moschus chrysogaster) on scree slope. Jiudingshan Nature Reserve, Mao Country, Sichuan Province, China. July.

Jack Dykinga / Glaciers on Mount Rainier, with dawn light on lenticular clouds hanging about the summit's crevasses on the East facing slope. Washington, USA. June 2018.

Paul Williams / Tunku Abdul Rahman Peak (3948 m) as seen from Sayat-Sayat checkpoint on the slope to the summit. Eastern plateau of Mt Kinabalu, Borneo.

Kim Taylor / Common sun beetle (Amara aenea) on white background, Surrey, England, UK. Controlled conditions

Graham Eaton / Disused copper mine and quarry workings, Parys Mountain, Amlwch, Isle of Anglesey, Wales, UK, September 2016.

John Cancalosi / Bauxite from Western Australia, Australia, Main ore of aluminium.

John Cancalosi / Chalcopyrite, copper iron sulfide, a copper ore, with calcite. from Zacatecas, Mexico.

Pete Oxford / Gold dredger on Essequibo river, the longest river in Guyana, South America

Pete Oxford / Aerial view of Aurora Gold Mining project, Guyana, South America

Pete Oxford / Aerial view of gold mining on edge of tropical rainforest, Arimu, Guyana, South America

Pete Oxford / Aerial view of gold mining in Arimu, Guyana, South America

Pete Oxford / Aerial view of illegal gold mining in Arimu, Guyana, South America

Pete Oxford / Aerial view of illegal gold mining in Arimu, Guyana, South America

Pete Oxford / Aerial view of gold dredger in Essequibo river, Guyana South America

Pete Oxford / Aerial view of gold mining, Guyana, South America