Jack Dykinga / Scalding hot water continuously spouting behind layers of mineral deposits, Fly Geyser, Black Rock Desert, Great Basin Desert, Nevada, USA

Milan Radisics / Aerial shot of steam geysers at Gunnhuver Hot Springs, Reykjanes Peninsula, Iceland, August 2018.

Milan Radisics / Aerial shot of steam geysers at Gunnhuver Hot Springs, Reykjanes Peninsula, Iceland, August 2018.

Milan Radisics / Aerial shot of Gunnuhver steam geyser, Gunnhuver Hot Springs, Reykjanes Peninsula, Iceland, August 2018.

Milan Radisics / Aerial shot of Gunnuhver steam geyser, Gunnhuver Hot Springs, Reykjanes Peninsula, Iceland, August 2018.

Juergen Freund / Northern quoll (Dasyurus hallucatus) orphan babies, sleeping on hot water bottle, Atherton Tablelands, Queensland, Australia.

Ingo Arndt / Japanese macaque being groomed in hot thermal spring {Macaca fuscata} Joshin-etsu NP, Japan

Ingo Arndt / Japanese macaques with young in hot spring {Macaca fuscata} Joshin-etsu NP, Japan

Ingo Arndt / Japanese macaque warming in hot thermal spring {Macaca fuscata} Joshin-etsu NP, Japan

Ingo Arndt / Japanese macaque warming in hot thermal spring {Macaca fuscata} Joshin-etsu NP, Japan

Ingo Arndt / Japanese macaques warming in hot thermal spring {Macaca fuscata} Joshin-etsu NP, Japan

Doug Perrine / Hot lava from the 61G flow, emanating from Pu'u O'o on Kilauea Volcano, flows over sea cliffs into the ocean under the stars and moon, Kamokuna, Kalapana, Hawaii Volcanoes National Park, Puna, Hawaii...

Andy Rouse / Bengal Tiger (Panthera tigris tigris) male 'Romeo T6' cooling off in waterhole during hot summer. Ranthambore National Park, India.

Floris van Breugel / A hot spring in the West Thumb Geyser Basin, Yellowstone National Park, Wyoming. The colors are a result of thermophilic bacteria living in the hot springs. December 2010.

Anup Shah / Japanese Macaque (Macaca fuscata) baby sitting on the edge of thermal hotspring pool. Jigokudani Yean-Koen National Park, Japan, February.

Denis-Huot,Denis-Huot / Lesser flamingo (Phoeniconaias minor) aerial view of flock and geyser, Bogoria Game Reserve, Kenya

Ben Cranke,Ben Cranke / Japanese Macaques (Macaca fuscatata) grooming in hot springs, Jigokudani, Nagano Prefecture, Honshu, Japan

Diane McAllister,Diane McAllister / Japanese Macaque (Macaca fuscata) with icy strands of fur on its head, Jigokudani, Japan, February

Diane McAllister,Diane McAllister / Japanese Macaque (Macaca fuscata) females gather at one end of the hot springs, Jigokudani, Japan, February

Ross Hoddinott / 2020VISION / Ice pattern, Merrivale, Dartmoor National Park, Devon, England, UK, February. Did you know? Hot water freezes more quickly than cold, although it is not known why.

Jack Dykinga / Scalding hot water continuously spouting behind layers of mineral deposits, Fly Geyser, Black Rock Desert, Great Basin Desert, Nevada, USA

Mark Hamblin / 2020VISION / Rowan tree silhouetted above Loch Lurgainn with Cul Mor (left) and Ben More Coigach beyond, Coigach, Highland, Scotland, UK, November. Photographer quote: "Let's face it walking uphill is a drag – I g...

Jeff Vanuga / Thermal hot spring at Mud Volcano, Hayden Valley, Yellowstone National Park, Wyoming, USA.

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...

Yukihiro Fukuda / Japanese macaque (Macaca fuscata) eight months old sitting in front of a pool created by a hot spring being used by females and young for bathing to keep warm, Jigokudani, Joshinetsu Kogen NP, Nagano...

Yukihiro Fukuda / Female Japanese macaques (Macaca fuscata) in a hot spring to keep warm, only females and young bathe, Jigokudani, Joshinetsu Kogen NP, Nagano, Japan

Yukihiro Fukuda / Japanese macaque (Macaca fuscata) holding young while bathing in hot spring to keep warm, only females and young bathe, winter, Jigokudani, Joshinetsu Kogen NP, Nagano, Japan

Wild Wonders of Europe / O Haarberg / Hot springs with sulpur deposits, Leirhnjkur, Iceland, July 2008

Yva Momatiuk & John Eastcott / Great Fountain Geyser erupting, Yellowstone National Park, Wyoming

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} 7-month-old monkey bathing in hot springs, examining its hands, water at 40 degrees, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} adult female bathing in hot springs tapping the water surface with hand in play, water at 40 degrees, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} group of monkeys bathing in hot springs, water at 40 degrees, Jigokudani, Nagano, Japan

Igor Shpilenok / Boiling red clay mud pots with steam, caused by underground volcanic activity, Valley of the Geysers, Kronotsky Zapovednik Reserve, Russia.

Igor Shpilenok / Kamchatka Brown bear (Ursus arctos beringianus) skirting a steaming thermal field, Valley of the Geysers, Kronotsky Zapovednik Reserve, Kamchatka, Russia.

Igor Shpilenok / The 'Fireplace' rock formation, Geyser River, Valley of the Geysers, Kronotsky Zapovednik Reserve, Russia.

Ingo Arndt / Japanese macaques grooming in hot thermal spring {Macaca fuscata} Joshin-etsu NP, Japan. These primates can survive winter temperatures below -15 degrees by bathing in the springs

Pete Oxford / Erruption of parasitic cone, with lava flowing into sea Fernandina Island, Galapagos

Miles Barton / Portrait of 'Tokiwa', the first macaque to get into the hot spring, Japan. Photographed while filming for A Monkey for All Seasons.

Doug Gimesy / During an extreme heat-stress event where temperatures exceeded 40°C, Melbourne Zoo veterinarian Sarah Frith gives in-filed triage to a suffering young and Grey-headed Flying-fox (Pteropus polioce...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed Flying-fox colony, where temperatures exceeded 40°C, Melbourne Zoo veterinarian Sarah Frith gives in-field triage to a suf...

Doug Gimesy / During an extreme heat-stress event at Melbourne's Yarra Bend Grey-headed Flying-fox colony, where temperatures exceeded 40°C, Melbourne Zoo veterinarian Sarah Frith gives in-field triage to a suf...

Doug Gimesy / Firefighter from Melbourne's Metropolitan Fire Brigade (MBF) try and help cool down the Yarra Bend Grey-headed Flying-fox (Pteropus poliocephalus) colony by spraying water on them. Park Ranger and Gre...

Doug Gimesy / Firefighter from Melbourne's Metropolitan Fire Brigade (MBF) try and help cool down the Yarra Bend Grey-headed Flying-fox (Pteropus poliocephalus) colony by spraying water on them. Park Ranger and...

Doug Gimesy / Firefighters from Melbourne's Metropolitan Fire Brigade (MBF) try and help cool down Melbourne's Yarra Bend Grey-headed flying-fox (Pteropus poliocephalus) colony by spraying water on them. Pa...

Doug Gimesy / Sprinkler system set up high in the trees at Melbourne's Yarra Bend Grey-headed flying-fox (Pteropus poliocephalus) colony in an attempt to try and keep them cool during an extreme heat event whe...

Nick Garbutt / Morning Glory thermal pool surrounded by snow, coniferous forest in background. Near Daisy Geyser Basin, Yellowstone National Park, USA. January 2019.

Nick Garbutt / Steam rising from Grand Prismatic thermal pool in snow covered landscape. Midway Geyser Basin, Yellowstone National Park, USA. February 2019.

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) just after having taken a flying high speed belly-dip into the Yarra river at the end of a very hot day. Yarra Bend Park, Kew, Victoria, Australia. Crop...

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) in flight, taking a flying high speed 'belly-dip' into the Yarra river at the end of a very hot day. They do this to wet their fur which both...

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) in flight, taking a flying high speed 'belly-dip' into the Yarra river at the end of a very hot day. They do this to wet their fur which both...

Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) in flight, taking a flying high speed 'belly-dip' into the Yarra river at the end of a very hot day. They do this to wet their fur which both...

Doug Gimesy / Grey-headed Flying-fox (Pteropus poliocephalus) in flight just after a belly-dip into the Yarra river at the end of a very hot day. They do this to wet their fur which both acts as a form of evaporati...

Doug Gimesy / A Grey-headed Flying-fox (Pteropus poliocephalus) in flight just after having taken a flying high speed belly-dip into the Yarra river at the end of a very hot day. They do this to wet their fur which...

Doug Gimesy / Volunteer wildlife career (Olwyn Jones) uses water to try and cool down some Grey-headed Flying-foxes (Pteropus poliocephalus) at the Melbourne flying-fox colony during a heat stress event day. Yarra...

Doug Perrine / Shimmering heat waves distort the image of diver as he samples erupting pillow lava at ocean entry of Kilauea Volcano, Hawaii Island.

Doug Perrine / Videographer filming pillow lava erupting underwater at Kilauea Volcano, Hawaii.

Doug Perrine / Diver shaping erupting pillow lava by hand to form underwater lava sculptures at ocean entry from Kilauea Volcano, Hawaii.

Doug Perrine / Diver sampling red hot pillow lava at underwater eruption of Kilauea Volcano, Hawaii.

Milan Radisics / Aerial shot of steam geysers at Gunnhuver Hot Springs, Reykjanes Peninsula, Iceland, August 2018.

Milan Radisics / Aerial shot of steam geysers at Gunnhuver Hot Springs, Reykjanes Peninsula, Iceland, August 2018.

Milan Radisics / Aerial shot of Gunnuhver steam geyser, Gunnhuver Hot Springs, Reykjanes Peninsula, Iceland, August 2018.

Jeff Foott / Hot spring, Doublet Pool, Upper Geyser Basin, Yellowstone National Park, Wyoming

Jeff Foott / Hot spring, Doublet Pool, Upper Geyser Basin, Yellowstone National Park, Wyoming

Jeff Foott / Hot spring, Doublet Pool, Upper Geyser Basin, Yellowstone National Park, Wyoming

Jeff Foott / Hot spring, Doublet Pool, Upper Geyser Basin, Yellowstone National Park, Wyoming

Konrad Wothe / Tropical rainforest, Rio Papallacta, northern Ecuador.

Konrad Wothe / Rainforest at Sandoval Lake, Tambopata National Reserve, Peru.

Ashley Cooper / Solar electric (photo voltaic) and solar thermal (hot water) panels on a house roof in Grasmere, Lake District, UK. August 2011

Ashley Cooper / Gentoo house builder's Hutton Rise housing development in Sunderland, UK. All of the houses have either solar thermal water heating or solar electric panels, some have both. December 2011

Ashley Cooper / Hutton Rise housing development in Sunderland, UK. All of the houses have either solar thermal water heating or solar electric panels, some have both. December 2011

Ashley Cooper / Hutton Rise housing development in Sunderland, UK. All of the houses have either solar thermal water heating or solar electric panels, some have both. December 2011

Ashley Cooper / Hutton Rise housing development in Sunderland, UK. All of the houses have either solar thermal water heating or solar electric panels, some have both. December 2011

Ashley Cooper / Houses in Almere with solar PV panels on the roof. It is the Netherlands youngest town, in Flevoland, which was reclaimed from the sea. This planned city is very green, with space heating provided fro...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suburb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / Sun city a suberb of Heerhugowaard in the Netherlands that has develped as a solar hot spot, with the majority of the houses powered by solar panels and is the largest CO2-neutral residential area in...

Ashley Cooper / A solar water heating panel attached to a caravan. June 2012

Ashley Cooper / Women constructing solar cookers at the Barefoot College in Tilonia, Rajasthan, India. The Barefoot College is a worldwide charity, founded by Bunker Roy, its aims are, education, drinking water, elec...

Ashley Cooper / Solar cookers at the Barefoot College in Tilonia, Rajasthan, India. The Barefoot College is a worldwide charity, founded by Bunker Roy, its aims are, education, drinking water, electrification through...

Ashley Cooper / An advert for a solar water heater in a park in Bangalore, India. December 2013

Ashley Cooper / Solar thermal panels for heating water in Skala Eresou on Lesvos, Greece. June 2013

Ashley Cooper / Sun Island in Almere, which is the Netherlands youngest town, in Flevoland, which was reclaimed from the sea. This planned city is very green, with space heating provided from a nearby combined heat a...

Ashley Cooper / Sun Island in Almere, which is the Netherlands youngest town, in Flevoland, which was reclaimed from the sea. This planned city is very green, with space heating provided from a nearby combined heat a...

Ashley Cooper / Solar thermal panels for heating water on the rooftops of a tea house in the Himalayan foothills, Nepal. December 2012

Ashley Cooper / Solar thermal panels heating water for a holiday complex in Myrina on Lemnos, Greece. September 2012

Ashley Cooper / Solar thermal panels for heating hot water with solar PV electric panels behind on a house roof in Ambleside, Lake District, UK. July 2012

Ashley Cooper / The Isle of Eigg off Scotland's west coast, shows the way forward to a renewable future. in 1997 the island was purchased from its fuedal landlord by the Eigg Heritage Trust, a partnership between the...

Ashley Cooper / The Isle of Eigg off Scotland's west coast, shows the way forward to a renewable future. in 1997 the island was purchased from its fuedal landlord by the Eigg Heritage Trust, a partnership between the...

Ashley Cooper / A solar water heating panel at a Green build centre in Kendal Cumbria, UK. March 2012

Ashley Cooper / Solar photo voltaic panels and solar thermal panels providing electricity and hot water for a 16th Century farm house on Bodmin moor, Cornwall, UK. November 2012

Ashley Cooper / In 2008 China became the worlds largest emitter of greenouse gases, fuelled by high levels of economic growth and electricity mainly being generated by dirty, highly polluting coal fired power station...

Ashley Cooper / Solar water heating panels on a house roof in Polruan in cornwall, UK. November 2009