Local boys drawing water from their well in the desert between Ounianga Kebir and Faya, northern Chad, Africa

Hot Water Beach on the east coast of the Coromandel Peninsula, where thermal waters rise up from below sand, North Island, New Zealand, Pacific

Terraces, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (USA), North America

Hot air balloon flight over Cappadocia, Anatolia, Turkey, Asia Minor, Asia

Hierve el Agua (the water boils), hot springs, water rich in minerals bubbles up from the mountains and pours over edge, Oaxaca, Mexico, North America

Hot mud, Vulcanetti di Macalube, Sicily, Italy, Europe

Young woman enjoying bathing in hot spring, Myvatn, Iceland, Polar Regions

Tourists taking pictures of Oskurholshver (screaming spring), famous hot spring at Hveravellir, Kjolur, Iceland, Polar Regions

Seljavallalaug hot pool, Iceland, Polar Regions

Exterior view of The Perlan Museum, converted hot water tanks in Reykjavik, Iceland, Polar Regions

Corona Arch and Bootlegger Canyon, Moab, Utah, United States of America, North America

A Navajo steam bath where water is sprinkled on hot rock for steam, and with doorway closed one or two can crouch, Arizona, United States of America, North America

Hot water in pools on calcite terraces deposited by Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Hot Bath, Thermae Bath Spa, Bath, Avon, England, United Kingdom, Europe

Hot air balloons carry tourists on early morning flights over the Valley of the Kings, Luxor, Egypt, North Africa, Africa

Hot Dog Eating Contest, Wall of Fame, Nathans Famous Hot Dogs, Coney Island, Brooklyn, New York City, United States of America, North America

Park Avenue, Arches National Park, Moab, Utah, United States of America, North America

Tourists around the hot mud pools at Namaskard thermal area, Hverarond, near Lake Myvatn, North area, Iceland, Polar Regions

Local people gather at the hot springs and waterfall at Hammamat Ma' In, Jordan, Middle East

Travertine calcite deposits, Minerva Terrace, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Hierve el Agua (the water boils), hot springs, Oaxaca, Mexico, North America

Hot air ballooning over fields of sunflowers in the early morning, Charente, France, Europe

Hot springs, Ranong, Thailand, Southeast Asia, Asia

Hot spring pool at Brilliant Spa and Resort in Kunming, China, Asia

Hot air balloon suspended over green fields and palm trees near Luxor, Thebes, Egypt, North Africa, Africa

Hot air balloons, Albuquerque, New Mexico, United States of America, North America

Close-up of the limestone terraces formed by volcanic water depositing six inches of calcium carbonate a year, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Hot springs and mud pools, Salar de Uyuni, Bolivia, South America

Looking down from hot air balloon, near Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Asia

Hot spring pool with flowers at Brilliant Spa and Resort in Kunming, China, Asia

Hot geisers in Iceland

Nathans Famous Hot Dogs, Coney Island, Brooklyn, New York City, United States of America, North America

Hot air balloons flying among rock formations at sunrise in the Red Valley, Goreme National Park, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Hot Cross buns being delivered to the village hall on Easter Sunday, Bryer (Bryher), Isles of Scilly, off Cornwall, United Kingdom, Europe

Hot air ballooning over fields of sunflowers in the early morning, Charente, France, Europe

Hot air balloon suspended over the Theban necropolis and houses of Luxor, Thebes, Egypt, North Africa, Africa

Hot air ballooning above the Loire River, Blois region, Pays de Loire, France, Europe

The Mammoth Site, Hot Springs, Black Hills, South Dakota, United States of America, North America

Hot Stone Treatment

The Mammoth Site, Hot Springs, South Dakota, United States of America, North America

Pinks Hot Dogs, an LA Institution, La Brea Boulevard, Hollywood, Los Angeles, California, United States of America, North America

Hot air balloons rising into the dawn sky above Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Hot air balloons above the volcanic landscape near Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Hot air ballooning over rock formations, Cappadocia, Anatolia, Turkey, Asia Minor, Asia

Hierve el Agua (the water boils), hot springs, water rich in minerals bubbles up from the mountains and pours over edge, Oaxaca, Mexico, North America

Hot air ballooning, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Hot stones massage,

Hot air balloons rising into the dawn sky above Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Minerva Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (USA), North America

Hot air balloon and rock formations at dawn, Valley of the Gods, Utah, United States of America, North America

Young woman enjoying bathing in hot spring, Blue Lagoon, Iceland, Polar Regions

The Mammoth Site, Hot Springs, South Dakota, United States of America, North America

Hot air balloon tour, Gerona, Catalonia, Spain, Europe

Hot air balloons, Albuquerque, New Mexico, United States of America, North America

Travertine calcite deposits on the Canary Spring terraces, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Looking down from hot air balloon, near Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Asia

Looking down from hot air balloon, near Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Asia

Hierve el Agua (the water boils), hot springs, Oaxaca, Mexico, North America

Tourists bathing in hot tub in dormant volcanic crater, Deception Island, Antarctica, Polar Regions

Hot geisers in Iceland

Nathans Famous Hot Dogs, Coney Island, Brooklyn, New York City, United States of America, North America

Steam from hot springs and snow-free hot ground in Midway Basin in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Beach on a hot day, Southsea, Hampshire, England, United Kingdom, Europe

Crowded beach at Portinatx, Ibiza, Baleares, (Spain)

Hierve el Agua (the water boils), hot springs, water rich in minerals bubbles up from the mountains and pours over edge, Oaxaca, Mexico, North America

Geothermal steam vents, Iceland, Polar Regions

Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Hot air balloons suspended over green fields and palm trees near Luxor, Thebes, Egypt, North Africa, Africa

Natural hot springs and waterfall at Hammamat Ma' In, Jordan, Middle East

Hot stones massage,

Tabacon lodge and hot springs in Arenal Volcano National Park, Costa Rica, Central America

Vulcanologist at work, La Fournaise volcano, island of Reunion, Africa

A Border Collie dog amongst Bluebells above Austwick, Yorkshire Dales, UK.

A Border Collie dog amongst Bluebells above Austwick, Yorkshire Dales, UK.

A solar cooker being used to cook food at the offices of WWF India, in Delhi, India.

Magnolia Sugar and Spice Praline Kitchen and Hot Sauce Bar in Royal Street, French Quarter of New Orleans, USA

Colourful Hot Air Balloons in sky, Albuquerque, New Mexico, United States of America, North America

Colourful hot air balloon being inflated at dusk, Albuquerque, New Mexico, United States of America, North America

Maori women cooking in hot spring, Rotorua, North Island, New Zealand, Pacific

Colourful hot air balloons at the Albuquerque Balloon Fiesta, Albuquerque, New Mexico, United States of America, North America

Bottles of Cajun spicy sauces - Chipolte, Pepper - at Magnolia Sugar and Spice Hot Sauce Bar, French Quarter, New Orleans, USA

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, electrification through solar power, skill development, health, women empowerment and the upliftment of rural people. The use of the cookers, vastly reduces the amount of fire wood women have to go out and collect from the forest.

Women welding joints during the construction of 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 solar power, skill development, health, women empowerment and the upliftment of rural people. Solar cookers save women having to walk to the froest to cut down wood for cooking, thus saving the forests, and a daily chore for woman.

Korea - chillis on sale at karakan wholesale food market, seoul

Women welding joints during the construction of 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 solar power, skill development, health, women empowerment and the upliftment of rural people. Solar cookers save women having to walk to the froest to cut down wood for cooking, thus saving the forests, and a daily chore for woman.

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, electrification through solar power, skill development, health, women empowerment and the upliftment of rural people. The use of the cookers, vastly reduces the amount of fire wood women have to go out and collect from the forest.

Women welding joints during the construction of 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 solar power, skill development, health, women empowerment and the upliftment of rural people. Solar cookers save women having to walk to the froest to cut down wood for cooking, thus saving the forests, and a daily chore for woman.

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, electrification through solar power, skill development, health, women empowerment and the upliftment of rural people.

Women constructing solar cookers at the Barefoot College in Tilonia, Rajasthan, India, demonstrate how hot the device is, by holding a sheet of newspaper which instantly sets on fire in the 300 degree Celcius heat. The Barefoot College is a worldwide charity, founded by Bunker Roy, its aims are, education, drinking water, electrification through solar power, skill development, health, women empowerment and the upliftment of rural people. The use of the cookers, vastly reduces the amount of fire wood women have to go out and collect from the forest.

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, electrification through solar power, skill development, health, women empowerment and the upliftment of rural people.

The Muni Seva Ashram in Goraj, near Vadodara, India, is a tranquil haven of humanitarian care. The Ashram is hugely sustainable, next year it will be completely carbon neutral. Its first solar panels were installed in 1984, long before climate change was on anyones agenda. Their energy is provided from solar panels, and wood grown on the estate. Waste food and animal manure is turned inot biogas to run the estates cars and also used for cooking. Solar cookers are also used, and the air conditioning for the hospital is solar run. 70 % of the food used is grown on the estate. They provide an orphanage, schools for all ages, vocational training, care for the elderly, a specialist cancer hospital withstate of the art machinary, and even have a solar crematorium. This shot shows a cook preparing chapatis on a biofuel stove.

The Muni Seva Ashram in Goraj, near Vadodara, India, is a tranquil haven of humanitarian care. The Ashram is hugely sustainable, next year it will be completely carbon neutral. Its first solar panels were installed in 1984, long before climate change was on anyones agenda. Their energy is provided from solar panels, and wood grown on the estate. Waste food and animal manure is turned inot biogas to run the estates cars and also used for cooking. Solar cookers are also used, and the air conditioning for the hospital is solar run. 70 % of the food used is grown on the estate. They provide an orphanage, schools for all ages, vocational training, care for the elderly, a specialist cancer hospital withstate of the art machinary, and even have a solar crematorium. This shot shows solar panels that focus the suns rays on heat exchangers to boil oil, which is then sent down to the kitchens below to heat the cookers.

The Muni Seva Ashram in Goraj, near Vadodara, India, is a tranquil haven of humanitarian care. The Ashram is hugely sustainable, next year it will be completely carbon neutral. Its first solar panels were installed in 1984, long before climate change was on anyones agenda. Their energy is provided from solar panels, and wood grown on the estate. Waste food and animal manure is turned inot biogas to run the estates cars and also used for cooking. Solar cookers are also used, and the air conditioning for the hospital is solar run. 70 % of the food used is grown on the estate. They provide an orphanage, schools for all ages, vocational training, care for the elderly, a specialist cancer hospital withstate of the art machinary, and even have a solar crematorium. This shot shows the solar air conditioning for the Ashram's hospital.

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 solar power, skill development, health, women empowerment and the upliftment of rural people. The use of the cookers, vastly reduces the amount of fire wood women have to go out and collect from the forest.

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, electrification through solar power, skill development, health, women empowerment and the upliftment of rural people. The use of the cookers, vastly reduces the amount of fire wood women have to go out and collect from the forest.

The Mesquite flat sand dunes in Death Valley which is the lowest, hottest, driest place in the USA, with an average annual rainfall of around 2 inches, some years it does not receive any rain at all.

Women building 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 solar power, skill development, health, women empowerment and the upliftment of rural people.

Taunggi hot air balloon festival, Taunggi, Myanmar (Burma), Asia

Solar panels at the Furnace Creek Visitor Centre in Death Valley. Death Valley is the lowest, hottest, driest place in the USA, with an average annual rainfall of around 2 inches, some years it does not receive any rain at all.

Colourful hot air balloons in blue sky, Albuquerque, New Mexico, United States of America, North America