Two Palestinian female youngsters wearing a hijab on their way to pray, Old City, Jerusalem, Israel, Middle East

Two rock climbers making their way up a very difficult route on the 450 metre monolith of Karimbony, Tsaranoro Massif, Andringitra National Park, Southern Madagascar, Africa

Camping under The Milky Way, as seen at the Torrance Barrens Dark Sky Reserve, two hours drive from Toronto, Ontario, Canada, North America

Two of four carved faces on gopura entrance way to the 12th century Banteay Kdei temple in ancient Angkor, Angkor, UNESCO World Heritage Site, Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

Milky way above a lavender field and two small trees on the Plateau de Valensole, Provence, France, Europe

Aerial view of O'Reilly Street with two maroon classic cars edging their way down, Old Havana, Cuba

Two men cutting cork in the traditional way near Tempio Pausania, centre of the industry, on Sardinia, Italy, Europe

Two school girls in military uniform on the way to school, Damascus, Syria, Middle East

Two walkers with rucksacks on the Cotswold Way footpath, Stanway village, The Cotswolds, Gloucestershire, England, United Kingdom, Europe

Pilgrim couple on the Camino de Santiago PIlgrim's Way to Santiago de Compostela in Galicia, Spain

Arab using two-way radio to communicate during parade of armed forces in Abu Dhabi, United Arab Emirates

A security guard in the ruler's special protection force, with earpiece connected to a two-way radio, holding a machine gun. He is wearing a bullet-proof vest as body armour.

Couple pass sign on Camino de Santiago Pilgrim's Way to Santiago de Compostela at Triacastela in Galicia, Spain

Two men carrying heavy loads on the way to local market, Shabin area, Shan State, Myanmar (Burma), Asia

Two walkers with rucksacks on the Cotswold Way footpath, Stanton village, The Cotswolds, Gloucestershire, England, United Kingdom, Europe

Kenya. Masai men starting a fire the traditional way by rubbing two sticks together and igniting dry elephant dung. Masai village within the amboseli national park

Flying Squid Species in mid-air, roughly 100 nm North of Tristan Da Cunha, South Atlantic Ocean. Flying Squid use membranes between their tentacles (visible on pic) & two fins at the rear of the mantle to glide through the air in a similar way to flying fish.

Flying Squid Species in mid-air (Ommastrephes bartramii). Extremely rare unusual image. South Atlantic Ocean. MORE INFO: Flying Squid use membranes between their tentacles (visible on pic) & two fins at the rear of the mantle to glide through the air in a similar way to flying fish. These unique adaptations allow them to avoid predation more easily. Ommastrephid squids are among the strongest swimmers in the Cephalopoda. A number of species are fished commercially. This particular species (Ommastrephes bartramii), is commonly known as "Neon Flying Squid" due to its colouration and its ability to glide over the ocean surface as seen in the photographs. Please note that this is a genuine image of a wild animal in its natural environment. It is not a digital manipulation.

Flying Squid Species in mid-air leaving a water trail behind it, roughly 100 nm North of Tristan Da Cunha, South Atlantic Ocean. Flying Squid use membranes between their tentacles (visible on pic) & two fins at the rear of the mantle to glide through the air in a similar way to flying fish.

Flying Squid Species in mid-air, roughly 100 nm North of Tristan Da Cunha, South Atlantic Ocean. Flying Squid use membranes between their tentacles (visible on pic) & two fins at the rear of the mantle to glide through the air in a similar way to flying fish.

Flying Squid Species in mid-air, roughly 100 nm North of Tristan Da Cunha, South Atlantic Ocean. Flying Squid use membranes between their tentacles (visible on pic) & two fins at the rear of the mantle to glide through the air in a similar way to flying fish.

Flying Squid Species in mid-air (Ommastrephes bartramii). Extremely rare unusual image. South Atlantic Ocean. MORE INFO: Flying Squid use membranes between their tentacles (visible on pic) & two fins at the rear of the mantle to glide through the air in a similar way to flying fish. These unique adaptations allow them to avoid predation more easily. Ommastrephid squids are among the strongest swimmers in the Cephalopoda. A number of species are fished commercially. This particular species (Ommastrephes bartramii), is commonly known as "Neon Flying Squid" due to its colouration and its ability to glide over the ocean surface as seen in the photographs. Please note that this is a genuine image of a wild animal in its natural environment. It is not a digital manipulation.

Flying Squid Species in mid-air, roughly 100 nm North of Tristan Da Cunha, South Atlantic Ocean. Flying Squid use membranes between their tentacles (visible on pic) & two fins at the rear of the mantle to glide through the air in a similar way to flying fish.

Flying Squid Species in mid-air (Ommastrephes bartramii). Extremely rare unusual image. South Atlantic Ocean. MORE INFO: Flying Squid use membranes between their tentacles (visible on pic) & two fins at the rear of the mantle to glide through the air in a similar way to flying fish. These unique adaptations allow them to avoid predation more easily. Ommastrephid squids are among the strongest swimmers in the Cephalopoda. A number of species are fished commercially. This particular species (Ommastrephes bartramii), is commonly known as "Neon Flying Squid" due to its colouration and its ability to glide over the ocean surface as seen in the photographs. Please note that this is a genuine image of a wild animal in its natural environment. It is not a digital manipulation.

Meet up of two Polar Bears (Ursus maritimus) the weaker one has to give way. Northwest of Nordaustlandet, Svalbard Archipelago, High Norwegian Arctic

Caucasian couple hiking in rocky landscape

The spectacular field of Messier 8 and 20 emission and reflection nebulas in Sagittarius, with M8, aka the Lagoon Nebula below, and M20, the Trifid Nebula, above, all set in the rich starfields of the Milky Way. The diffuse nebula left of M8 is NGC 6559. Two globular clusters, NGC 6544 and NGC 6553, sit below and to the left (east) of M8. The Messier open cluster, M21, sits above M20.

Hikers and signaling in Torres Sector, Torres del Paine national park, Patagonia, Chile

Mars (at left in clouds) and the summer Milky Way over Lake Herbert and reflected in the still waters this night. This is in Banff National Park, Alberta. I shot this July 17, 2018 on a night that gradually clouded up, after a run of two very good nights previous to this.

Mars (at left) and the Milky Way (at right) over a single tipi (with another under construction at back) at the Two Trees site at Grasslands National Park, Saskatchewan, August 6, 2018. I placed a low-level warm LED light inside the tipi for the illumination.

Two people on the way to the Rosary Curch, Maria Woerth, Woerthersee (biggest lake of Carinthia), Carinthia, Austria

Two hikers watch the starry sky and milky way, camping spot in the Pfunderer Mountains, South Tyrol, Italy

Two hikers near Grenz glacier, way to Monte-Rosa-Hut, Liskamm in background, Zermatt, Canton of Valais, Switzerland, myclimate audio trail

Hiker in blue jacket navigating rocky landscape near a small waterfall on mount txindoki, showcasing the rugged beauty of gipuzkoa, basque country

Climbers ascending Mt. Marmolada, Dolomites, Westgrat fixed rope route, Mt. Marmolada in the back, Trentino, Italy, Europe

Children in the mountainous countryside surrounding Nagarkot, Nepal, Asia

Two Lufthansa jets approaching Frankfurt International Airport for landing in Frankfurt, Hesse, Germany, Europe

Entrance with sign to abandoned two star hotel viewed from beneath an old stone arch in a narrow street in Arles, France

Palace guards, Prague Castle, Hradschin, Castle District, Prague, Central Bohemia, Czech Republic, Eastern Europe

Two female sculptures by Luc Jaggi, symbolizing Peace on the right and Justice on the left, in front of the main entrance to the Centre William Rappard, headquarters of the World Trade Organization, WTO, Geneva, Switzerland, Europe

Two Chinese gates, pedestrian zone in the city center, Jinmabiji square, Kunming, Yunnan Province, People's Republic of China, Asia

Tibetan women in traditional costume at the morning circling, Kora, of the Labrang monastery, Xiahe, Gansu, China, Asia

Iranian pickup truck overloaded with sacks on a highway, Iran, Persia, Asia

Blue doors of a house, doors surrounded by stone carvings and tile mosaics, Essaouira, Morocco, Africa

Limburg Cathedral, Cathedral of Limburg an der Lahn, Hesse, Germany, Europe

Road sign with two one way signs indicating opposite directions

Autobahn, empty highway through the Frankfurter Stadtwald woods, Frankfurt am Main, Hesse, Germany, Europe

back view traveller walking down bridge

Firefighters extinguishing the fire of two burned-out trucks on the A8 motorway, Stuttgart, Baden-Wuerttemberg, Germany, Europe

The Milky Way and two tracks of satellites on a starlit sky in winter, weak northern lights, aurora borealis on the lower sky, Longyearbyen, Spitsbergen, Svalbard, Norway, Europe

Hikers at summit cross, Kemater Alm, Kalkkögel, Tyrol, Austria, Europe

Two tourists on a jetty in the thermal area, hot spring, Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, North America

View of Two Medicine Lake, mountain peaks Rising Wolf Mountain and Sinopah Mountain, hiking trail to Scenic Point, Glacier National Park, Montana, USA, North America

Trunks of two redwoods, coast redwood forest (Sequoia sempervirens), dense vegetation, Jedediah Smith Redwoods State Park, Simpson-Reed Trail, California, USA, North America

Couple path bamboo forest

Hiker between dead trees, hiking trail to Scenic Point, view of Two Medicine Lake, mountain peaks Rising Wolf Mountain and Sinopah Mountain, Glacier National Park, Montana, USA, North America

View onto the autobahn, motorway in Germany

Two young women sitting at a jetty having a snack, Lake Geroldsee, Mittenwald, Karwendel, Bavaria, Germany, Europe

Man and woman, couple during Nordic Walking in the mountains, Rittner Horn, South Tyrol, Italy, Europe

Painting of two women on wooden doors, Killarney, Ireland, Europe

Road sign with two one way signs indicating opposite directions

Night shot, Interstate 5 motorway in front of the skyline of the Financial District in Seattle, Columbia Center, formerly known as Bank of America Tower, Washington Mutual Tower, Two Union Square Tower, Municipal Tower, formerly Key Tower, U.S. Bank Cente

View of Two Medicine Lake, mountain peaks Rising Wolf Mountain and Sinopah Mountain, hiking trail to Scenic Point, Glacier National Park, Montana, USA, North America

Hikers on the trail to Scenic Point, view of Two Medicine Lake with mountain peak Rising Wolf Mountain, Glacier National Park, Montana, USA, North America

Two shooting stars with milky way in Brandenburg, Germany, Europe

Hikers on the trail to Scenic Point, view of Two Medicine Lake with mountain peak Rising Wolf Mountain, Glacier National Park, Montana, USA, North America

Hiker standing on rock ledge, view of Two Medicine Lake, mountain peaks Rising Wolf Mountain and Sinopah Mountain, hiking trail to Scenic Point, Glacier National Park, Montana, USA, North America

Town gate, City wall, historic town centre, Alcudia, Majorca, Balearic Islands, Spain, Europe

Gate of a football stadium

Hikers on the trail to Scenic Point, view of Two Medicine Lake, mountain peaks Rising Wolf Mountain and Sinopah Mountain, Glacier National Park, Montana, USA, North America

Jiayuguan fortress with two gatehouses at the western end of the Great Wall, Silk Road, Gansu, China, Asia

Irish pub with beer kegs in the street, Clifden, Connemara, Republic of Ireland, Europe

Two young men steer a drone, DJI Mavic, at the mountain top, at the back summit of the Hochvogel, hiking trail Jubilaeumsweg, Via Alpina, Allgaeu, Allgaeuer Hochalpen, Bavaria, Germany, Europe

Painting of two women on wooden doors, Killarney, Ireland, Europe

Hikers descending from Feldalphorn, Kelchsau, Kitzbuehel Alps, Tyrol, Austria, Europe

Parish church of St. Peter and Paul, Lindenberg, Allgaeu region, Baden-Wuerttemberg, Germany, Europe

Truck being towed out of the mud by another truck, jungle trail, Bamenda, Cameroon, Africa

Two doorknobs, door handles on an old door, Seville, Andalusia, Spain

Hikers next to an artistically decorated shovel at the Chiemhauser Alm, Schleching, Chiemgau, Upper Bavaria, Bavaria, Germany, Europe

Two doorknobs, door handles on an old door, Seville, Andalusia, Spain

Lonely, snowy farm in the mountains, Pankrazberg, Zillertal, Tyrol, Austria, Europe

An empty highway, central France, Europe

View of Two Medicine Lake with dead trees, hiking trail to Scenic Point, Glacier National Park, Montana, USA, North America

Two Vienamese women, harbour of Mui Ne, Vietnam, Asia

Two friends hiking together

Two older women walking in autumn in the park, Cologne, North Rhine-Westphalia, Germany, Europe

Two burning trucks, including a tanker with heating oil, fatal accident on the A8 motorway, Stuttgart, Baden-Wuerttemberg, Germany, Europe

Young couple hiking on trail PR 9 Caldeirao Verde along a levada, Queimadas Rainforest, Madeira, Portugal, Europe

Two hikers on hiking trail Jubilaeumsweg at the Kirchdachsattel, sign state border, Allgaeuer Alps, Allgaeu, Bavaria, Germany, Europe

Hikers on the trail to Scenic Point, view of Two Medicine Lake, mountain peaks Rising Wolf Mountain and Sinopah Mountain, Glacier National Park, Montana, USA, North America

Mariae Himmelfahrt parish church, Gurker Cathedral, Gurk, Carinthia, Austria, Europe

Kloster Triefenstein monastery, former convent of the Augustinian choristers in Triefenstein, Main-Spessart district, Lower Franconia, Bavaria, Germany, Europe

Autobahn, empty highway through the Frankfurter Stadtwald woods, Frankfurt am Main, Hesse, Germany, Europe

Spa hotel, Merano or Meran, South Tyrol, Italy, Europe

Milky Way with the two Magellanic Clouds in the New Zealand night sky, West Coast, New Zealand, Oceania

Two young women sitting at a jetty having a snack, Lake Geroldsee, Mittenwald, Karwendel, Bavaria, Germany, Europe

View of Two Medicine Lake, mountain peaks Rising Wolf Mountain and Sinopah Mountain, hiking trail to Scenic Point, Glacier National Park, Montana, USA, North America

360° panoramic view of the Geisler Mountains, two hikers walking near Mittagsscharte gorge, Puez-Geisler Nature Park, province of Bolzano-Bozen, Italy, Europe

Village church, classical style, architect Karl Friedrich Schinkel, Straupitz, Spreewald, Brandenburg, Germany, Europe

Couple walking in the snow, Reeuwijkse Plassen nature reserve in winter, landscape between Gouda and Bodegraven, Reeuwijk, Holland, The Netherlands, Europe