African forest elephant (Loxodonta cyclotis), Dzanga Bai, Dzanga Sangha National Park, UNESCO, Central African Republic

African forest elephant (Loxodonta cyclotis), Dzanga Bai, Dzanga Sangha National Park, UNESCO, Central African Republic

Locals in a canoe, Sangha River, Dzanga Sangha National Park, UNESCO, Central African Republic

Sangha River, Dzanga Sangha National Park, UNESCO, Central African Republic

Coal (charcoal), Eastern Central African Republic

Pygmies waiting to go net hunting, Dzanga Sangha National Park, UNESCO, Central African Republic

Pygmy woman going net hunting, Dzanga Sangha National Park, UNESCO, Central African Republic

Pygmy man going net hunting, Dzanga Sangha National Park, UNESCO, Central African Republic

Pygmy man going net hunting, Dzanga Sangha National Park, UNESCO, Central African Republic

Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Southeast Alaska, United States of America

Pygmy man climbing up a tree, Dzanga Sangha National Park, UNESCO, Central African Republic

Pygmy women in the jungle, Dzanga Sangha National Park, UNESCO, Central African Republic

Adult mountain goat (Oreamnos americanus) on cliff face in Tracy Arm, Southeast Alaska, United States of America

Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Southeast Alaska, United States of America

Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Southeast Alaska, United States of America

Adult brown bears (Ursus arctos) feeding on humpback whale carcass, Scidmore Cut, Glacier Bay National Park, Alaska, United States of America

Adult brown bear pair (Ursus arctos) exhibiting courtship behavior at Scidmore Cut in Glacier Bay National Park, Alaska, United States of America

View of wind power turbines in the Sierra de las Animas hills in Maldonado department, Uruguay

The dramatic scenery in the volcanic highlands of northern Saint Anthony, Cape Verde

Group of school children assisting the departure of tourists in a bush village near Namanga, Kenya, East Africa

Burned trees on a Volcanic cinder rim in Coconino National Forest, Arizona, USA

Sheep grazing on remote Heimaey Island, Iceland

Volcanic landscape with small plants in the Timanfaya national park in Lanzarote in the Canary Islands, Spain

Spain. Wind turbines in rural areas in andalucia

Sand dunes, Nagliai Nature Reserve, Curonian Spit, Lithuania, Baltic States, North Europe

Aerial of Pia glacier, Tierra del Fuego, Chile, South America

Aerial of Potter glacier, Tierra del Fuego, Chile, South America

Scene of a fisherman on boat with pelicans in the port town of Puerto Ayora, Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Mountaimous fjord, Kulusuk, Greenland, Denmark, Polar Regions

View of Welome sign and signpost on Tristan da Cunha, the most remote inhabited location on Earth, Tristan da Cunha, South Atlantic Ocean

View of tropical flora in Giardini la Mortella Botanical Garden, Forio, Island of Ischia, Campania, Italy, Europe

El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe

View of dramatic clouds refecting in Hardwick Ponds, Hardwick Park, Hardwick Hall, Bolsover, Derbyshire, England, United Kingdom, Europe

Mountain scenery, Island of Corsica, France

Aerial of Wulaia Bay, Tierra del Fuego, Chile, South America

Tourist photographing an endemic Galapagos marine iguana (Amblyrhynchus cristatus) on Espanola Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Views of Bjornsundet (Bear Sound), near the island of Spitsbergen in the Svalbard Archipelago, Norway, Arctic, Europe

Spain.solar panels creating renewable energy from the sun, with a cut,out for tio pepe sherry near jerez in andalucia

Limestone cliffs at Dunraven Bay, Southerndown, Bridgend, South Wales, United Kingdom, Europe

Adult king penguins (Aptenodytes patagonicus) returning from sea to the nesting colony at Salisbury Plain, South Georgia, Polar Regions

Migrating Pink-Footed geese over-wintering at Holkham, North Norfolk coast, East Anglia, Eastern England

Church ruins in North Creake, Norfolk, England, United Kingdom

Migrating Pink-Footed geese over-wintering at Holkham, North Norfolk coast, East Anglia, Eastern England

Birdwatchers inside bird hide watch migrating geese over-wintering near Holkham, Norfolk, East Anglia, United Kingdom

Migrating Pink-Footed geese over-wintering at Holkham, North Norfolk coast, East Anglia, Eastern England

Migrating Pink-Footed geese over-wintering on marshland at Holkham, North Norfolk coast, East Anglia, Eastern England

Migrating Pink-Footed geese over-wintering on marshland at Holkham, North Norfolk coast, East Anglia, Eastern England

Migrating Pink-Footed geese over-wintering on marshland at Holkham, North Norfolk coast, East Anglia, Eastern England

Migrating Pink-Footed geese over-wintering near Holkham, North Norfolk coast, East Anglia, Eastern England

Migrating Pink-Footed geese over-wintering at Holkham, North Norfolk coast, East Anglia, Eastern England

Church ruins in North Creake, Norfolk, England, United Kingdom

Migrating Pink-Footed geese over-wintering on marshland at Holkham, North Norfolk coast, East Anglia, Eastern England

Migrating Pink-Footed geese over-wintering at Holkham, North Norfolk coast, East Anglia, Eastern England

Footpath at Aira Beck in the Lake District, England, United Kingdom

Oxfordshire countryside, England, United Kingdom

Uganda the haven resort near jinja. solar electric cells

Lamplugh Glacier in Glacier Bay National Park, southeast Alaska, USA

Views of Mendenhall Glacier just outside Juneau, southeast Alaska, USA. This glacier is receeding at an alarming rate, probably due to climate change.

Whale Bone Alley, tombs. Lorino, Siberia, Chukotskiy Peninsular, Russia

The church situated at the former whaling station of Grytviken. Grytviken, South Georgia, Subantarctic

The cleaned-up former whaling station of Grytviken. Grytviken, South Georgia, Subantarctic

Blue whale, (balaenoptera musculus),endangered, Gulf of California Mexico.

Views of Mendenhall Glacier just outside Juneau, southeast Alaska, USA. This glacier is receeding at an alarming rate, probably due to climate change.

Views of Mendenhall Glacier just outside Juneau, southeast Alaska, USA. This glacier is receeding at an alarming rate, probably due to climate change.

Whale hunters, Inuits, Chukchi peoples. Lorino, Siberia, Chukotskiy Peninsular, Russia

Bow of Whale Boat tender-Godthul-South Georgia

View onto the former whaling station of Grytviken . Grytviken, South Georgia, Subantarctic

Whalebones - relicts from early whaling in the Deep South. Wiencke Island, Antarctic Peninsula

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. Red lagoon near Boca Paila Bridge. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Underwater close up view of open coral polyp during a dive, Cancun, Quintana Roo, Mexico

Aerial view of Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico

Palms and old pier in Punta Allen Sian Ka'an Reserve, Yucatan Peninsula, Mexico. In the language of the Mayan peoples who once inhabited this region, Sian Ka'an means Origin of the Sky. Located on the east coast of the Yucatán peninsula, this biosphere reserve contains tropical forests, mangroves and marshes, as well as a large marine section intersected by a barrier reef. It provides a habitat for a remarkably rich flora and a fauna comprising more than 300 species of birds, as well as a large number of the region's characteristic terrestrial vertebrates, which cohabit in the diverse environment formed by its complex hydrological system. Along its roughly 120 kilometres of coastline, the property covers over 400,000 hectares of land ranging from sea level to only ten m.a.s.l. The property boasts diverse tropical forests, palm savannah, one of the most pristine wetlands in the region, lagoons, extensive mangrove stands, as well as sandy beaches and dunes. The 120,000 hectares of marine area protect a valuable part of the Mesoamerican Barrier Reef and seagrass beds in the shallow bays. The lush green of the forests and the many shades of blue of the lagoons and the Caribbean Sea under a wide sky offer fascinating visual impressions.

Pink anemonefish on sea anemone, Amphiprion periderion, Rongelap, Marshall Islands (N. Pacific).

Person with a safety suit in a forest area. Ayegui, Navarre, Spain, Europe

Person with a safety suit lying down in a flowers carpet in a forest area. Ayegui, Navarre, Spain, Europe

Person with a safety suit in a forest area. Ayegui, Navarre, Spain, Europe

French angelfish, Pomacanthus paru, Ilha rata, Fernando de Noronha national marine sanctuary, Pernambuco, Brazil (S. Atlantic)

Aerial view of an holm oak grove and mountain range at background. Tierra Estella county. Navarre, Spain, Europe.

Aerial view of an holm oak grove and mountain range at background. Tierra Estella county. Navarre, Spain, Europe.

Attractive young brazilian woman plays the guitar at Greenheart?s La Casita Verde, Ibiza

Windmills. Spain.

Windmills. Spain.

Windmills. Spain.

Windmills. Spain.

Northern Spotted Owl in old-growth forest; Willamette National Forest, Cascade Mountains, Oregon, USA.

Grinnell Glacier, Glacier NP, 1938/1981

Grinnell Glacier, Glacier NP, 1936/2010

Volunteer Feeding a Rescued Koala Bear at the Koala Bear Sanctuary, Port Macquarie, Gold Coast of Australia

Cleaning of the beach with a horse and carriage.

Seekuh on an Ocean clean up run by the charity One Earth One Ocean, Hong Kong, China

Cleaning of the beach with a horse and carriage.

Seekuh on an Ocean clean up run by the charity One Earth One Ocean, Hong Kong, China

Cleaning of the beach with a horse and carriage.

Charging station. Electric car.

Close up detail of a large solar panel

Evening image of a misty field with windturbines during the winter.

Fumaroles Norris Geyser Basin Yellowstone National Park WY