Visitors walk up a spiral ramp around the cone shaped funnel in the dome cupola, which has 360 glass mirrors reflecting light into the Plenary chamber of the Reichstag building, designed by Sir Norman Foster, Berlin, Germany, Europe

Grandmother and child walking up leafy avenue near Dambulla, Sri Lanka, Asia

Isola Bella Island seen from the long walk up to the cente of Taormina, Sicily, Italy, Mediterranean, Europe

Backpacker walking across dried up lake towards Llaima volcano, Conguillio National Park, Chile, South America

Backpacker heads up to first basecamp on Mount Aconcagua, Argentina, South America

Landscape on the walk up Kawah Ijen, Java, Indonesia, Southeast Asia, Asia

A porter crosses a river using a fallen log whilst carrying a heavy load up the Hingku Valley, near Lukla, south of Mount Everest, Nepal Himalaya, Nepal, Asia

Uisge Soluis Mhoir, burn on the walk up to Coire-Fhionn Lochan, Isle of Arran, North Ayrshire, Scotland, United Kingdom, Europe

Pilgrim in trance during the Hindu Thaipusam Festival supported by friends during walk from Sri Subramaniyar Swami Temple up to Batu Caves, Selangor, Malaysia, Southeast Asia, Asia

Pilgrim in trance during the Hindu Thaipusam Festival during walk from Sri Subramaniyar Swami Temple up to Batu Caves, Selangor, Malaysia, Southeast Asia, Asia

Visitors walk up a spiralling ramp around the cone shaped funnel in the dome cupola, which has 360 glass mirrors reflecting light into the Plenary chamber of the Reichstag building, designed by Sir Norman Foster, Berlin, Germany, Europe

Chinese boy walking up steps of the Great Wall of China at Mutianyu, north of Beijing, China

Young man and woman walk up sand dunes in the Sahara Desert, Morocco

Tourists walk past souvenir tee shirt stating I have climbed up the The Great Wall, in Mutianyu, north of Beijing

Man walking up mountain road, between Herat and Maimana, after Subzak Pass, Afghanistan, Asia

Bar-Tailed Godwit (Limosa lapponica) walking while foraging for food on beach, foot up. Gott Bay, Argyll,, Scotland, UK

Bar-Tailed Godwit (Limosa lapponica) walking while foraging for food on beach, back foot up. Gott Bay, Argyll, Scotland, UK

Bar-Tailed Godwit (Limosa lapponica) walking while foraging for food on beach, front foot up. Gott Bay, Argyll,. Scotland, UK

Bar-Tailed Godwit (Limosa lapponica) walking while foraging for food on beach, back foot up. Gott Bay, Argyll, Scotland, UK

Bar-Tailed Godwit (Limosa lapponica) walking while foraging for food on beach, back foot up. Gott Bay, Argyll,. Scotland, UK

Inside of the Murinsel, Mur Island on Mur River, Graz, Austria, Europe

Close up of The Umbracle (detail), a landscaped walk with plant species indigenous to Valencia, City of Arts and Sciences, Cuidad de las Artes y las Ciencias, Santiago Calatrava (architect), Valencia, Spain

Tourists walking up the stairs of a pyramid, Uxmal, Yucatan, Mexico

close-up of cow on alpine pasture, Bavarian alps, Upper Bavaria, Bavaria, Germany

Two boys walking up a sand dune, Deadvlei, Sossusvlei, Namib-Naukluft Park, Namibia

Young woman hiking up a mountain on a sunny day, Oberstdorf, Bavaria, Germany

Lynx (Lynx lynx) in the snow

People on icy pier, frozen Black Sea, a rare phenomenon, Odessa, Ukraine, Eastern Europe

Marching band, procession at the Fleadh Cheoil na hÉireann, Festival of Music in Ireland, Tullamore, County Offaly, Midlands, Ireland, Europe

People on the frozen Aussenalster lake in Hamburg, Germany, Europe

Muslim women on the beach in Zanzibar, Tanzania, Africa

People on icy pier, frozen Black Sea, a rare phenomenon, Odessa, Ukraine, Eastern Europe

Neon signs, entertainment and shopping area at Shinjuku Subnade Street, Shinjuku district, Tokyo, Japan, Asia

Christmas Market and 60th Essen Light Weeks, logo of the European Capital of Culture for 2010, and other lights motifs, Willy-Brand-Platz and Kettwigerstrasse, Essen, North Rhine-Westphalia, Germany, Europe

Christmas Market and 60th Essen Light Weeks, logo of the European Capital of Culture for 2010, and other lights motifs, Willy-Brand-Platz and Kettwigerstrasse, Essen, North Rhine-Westphalia, Germany, Europe

back view traveller walking down bridge

Guggenmusik Bacchus Littau music group dressed to the theme of Toreros during the carnival procession, Littau, Lucerne, Switzerland, Europe

Roped party on glaciers Styggebreen, climb to Galdhøppigen, 2469 m, Oppland, Norway, Europe

A Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

A young Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

A young Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

Lynx (Lynx lynx) in the snow

Court musicians, Landshut Wedding historical pageant, Landshut, Lower Bavaria, Bavaria, Germany, Europe

Christmas shopping in the old town of Salzburg, Getreidegasse, Salzburg, Austria, Europe

A Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

A young Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

A young Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

A Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

A young Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

International German Gymnastics Festival 2009 procession, Mainkai, Frankfurt am Main, Hesse, Germany, Europe

A young Mexican Charro rounds up a herd of horses running through a field on a Mexican Ranch at sunrise

Landshut Wedding historical pageant, Landshut, Lower Bavaria, Bavaria, Germany, Europe

Shinto priests at archery opening ceremonial in Shimogamo Shrine, striding through entrance gate, Kyoto, Japan, Asia

Landshut Wedding historical pageant, Landshut, Lower Bavaria, Bavaria, Germany, Europe

Brandenburg Gate with pedestrian traffic light, photo composition, Berlin, Germany, Europe

Geleucht light installation in the shape of a walk-in mine lamp on the heap Rheinpreussen, Moers, Ruhr area, North Rhine-Westphalia, Germany, Europe

Road junction with traffic at night, Ho Chi Minh City, Saigon, Vietnam, Asia

Characters of a pedestrian traffic light, Munich, Upper Bavaria, Bavaria, Germany, Europe

Christmas shopping in the old town of Salzburg, Getreidegasse, Salzburg, Austria, Europe

Group of camels, caravan, in the volcanic landscape of Hoggar, Ahaggar Mountains, Wilaya Tamanrasset, Algeria, Sahara, North Africa

Young woman hiking, backpacking, hiker with backpack, snow field, descending towards summit of historic Chilkoot Trail, Chilkoot Pass, Crater Lake behind, alpine tundra, Yukon Territory, British Columbia, B. C., Canada

Infantry, Landshut Wedding historical pageant, Landshut, Lower Bavaria, Bavaria, Germany, Europe

International German Gymnastics Festival 2009 procession, musicians, Frankfurt am Main, Hesse, Germany, Europe

During the ascent through Valfredda to Forca Rossa above Pellegrino Pass, Dolomites, Trentino, Italy, Europe

Group of camels, caravan in the volcanic landscape of Hoggar, Ahaggar Mountains, Wilaya Tamanrasset, Algeria, Sahara, North Africa

Christmas market on Altmarkt square, 575th Striezelmarkt 2009, walk-through candle arch and a Christmas tree with lights, Dresden, Saxony, Germany, Europe

Priest and altar boys on their way to church on the marketplace, Ludwigsburg, Baden-Wuerttemberg, Germany, Europe

Christmas Market on Altmarkt Square with light snowfall, 575th Striezelmarkt 2009, overview with the Church of the Cross, a Christmas tree, a pyramid and a walk-through illuminated arch, Dresden, Saxony, Germany, Europe

Landshut Wedding historical pageant, Landshut, Lower Bavaria, Bavaria, Germany, Europe

Family walking in a winter landscape, Chiemgau, Upper Bavaria, Germany, Europe

Two young Polar Bears (Ursus maritimus) walking in step over the ice, Churchill, Manitoba, Canada

Tourists climbing Dune 45 near Sossusvlei, Namib Desert, Namib Naukluft Park, Namibia, Africa

High-rise, skyscraper at the traffic light at an intersection in modern Beijing, Guomao District, Beijing, China, Asia

Mountaineer looks up, Berchtesgaden National Park, Ramsau, Berchtesgadener Land, Upper Bavaria, Bavaria, Germany, Europe

Group of women with wigs, Carnival street parade, Cologne, North Rhine-Westphalia, Germany, Europe

Mountaineer looks up, Golling, Salzburger Land, Austria, Europe

Brandenburg Gate with pedestrian traffic light, Berlin, Germany, Europe

Street in a little village in winter, Spiekeroog island, one of the East Frisian Islands, Lower Saxony, Germany, Europe

Pedestrians crossing the Via della Conciliazione, road of reconciliation, illuminated St. Peter's Basilica at back, Rome, Italy, Europe

Pedestrian subway, Stuttgart, Baden-Wuerttemberg, Germany, Europe

Individual dressed as an owl during the carnival procession, Littau, Lucerne, Switzerland, Europe

Zainabu Ramadhani, 19, (yellow and red patterned skirt) her mother Fatma Mziray, age 38, (blue head dress) and Fatma’s sister-in-law Zaitun Hamad, 18, (orange wrap and white top) walk home after gathering firewood near Fatma’s home in Mforo. Mforo is near Moshi, Tanzania. Fatma Mziray is a Solar Sister entrepreneur who sells both clean cookstoves and solar lanterns. Fatma heard about the cookstoves from a Solar Sister development associate and decided to try one out. The smoke from cooking on her traditional wood stove using firewood was causing her to have a lot of heath problems, her lungs congested her eyes stinging and her doctor told her that she had to stop cooking that way. Some days she felt so bad she couldn't go in to cook. Fatma said, “Cooking for a family, preparing breakfast, lunch and dinner I used to gather a large load of wood every day to use. Now with the new cook stove the same load of wood can last up to three weeks of cooking. “With the extra time I can develop my business. I also have more time for the family. I can monitor my children’s studies. All of this makes for a happier family and a better relationship with my husband. Since using the clean cookstove no one has been sick or gone to the hospital due to flu.” Fatma sees herself helping her community because she no longer sees the people that she has sold cookstoves have red eyes, coughing or sick like they used to be. She has been able to help with the school fees for her children, purchase items for the home and a cow. “What makes me wake up early every morning and take my cookstoves and go to my business is to be able to take my family to school as well as to get food and other family needs.”

Zainabu Ramadhani, 19, (yellow and red patterned skirt) her mother Fatma Mziray, age 38, (blue head dress) and Fatma’s sister-in-law Zaitun Hamad, 18, (orange wrap and white top) walk home after gathering firewood near Fatma’s home in Mforo. Mforo is near Moshi, Tanzania. Fatma Mziray is a Solar Sister entrepreneur who sells both clean cookstoves and solar lanterns. Fatma heard about the cookstoves from a Solar Sister development associate and decided to try one out. The smoke from cooking on her traditional wood stove using firewood was causing her to have a lot of heath problems, her lungs congested her eyes stinging and her doctor told her that she had to stop cooking that way. Some days she felt so bad she couldn't go in to cook. Fatma said, “Cooking for a family, preparing breakfast, lunch and dinner I used to gather a large load of wood every day to use. Now with the new cook stove the same load of wood can last up to three weeks of cooking. “With the extra time I can develop my business. I also have more time for the family. I can monitor my children’s studies. All of this makes for a happier family and a better relationship with my husband. Since using the clean cookstove no one has been sick or gone to the hospital due to flu.” Fatma sees herself helping her community because she no longer sees the people that she has sold cookstoves have red eyes, coughing or sick like they used to be. She has been able to help with the school fees for her children, purchase items for the home and a cow. “What makes me wake up early every morning and take my cookstoves and go to my business is to be able to take my family to school as well as to get food and other family needs.”

Zainabu Ramadhani, 19, (yellow and red patterned skirt) her mother Fatma Mziray, age 38, (blue head dress) and Fatma’s sister-in-law Zaitun Hamad, 18, (orange wrap and white top) walk home after gathering firewood near Fatma’s home in Mforo. Mforo is near Moshi, Tanzania. Fatma Mziray is a Solar Sister entrepreneur who sells both clean cookstoves and solar lanterns. Fatma heard about the cookstoves from a Solar Sister development associate and decided to try one out. The smoke from cooking on her traditional wood stove using firewood was causing her to have a lot of heath problems, her lungs congested her eyes stinging and her doctor told her that she had to stop cooking that way. Some days she felt so bad she couldn't go in to cook. Fatma said, “Cooking for a family, preparing breakfast, lunch and dinner I used to gather a large load of wood every day to use. Now with the new cook stove the same load of wood can last up to three weeks of cooking. “With the extra time I can develop my business. I also have more time for the family. I can monitor my children’s studies. All of this makes for a happier family and a better relationship with my husband. Since using the clean cookstove no one has been sick or gone to the hospital due to flu.” Fatma sees herself helping her community because she no longer sees the people that she has sold cookstoves have red eyes, coughing or sick like they used to be. She has been able to help with the school fees for her children, purchase items for the home and a cow. “What makes me wake up early every morning and take my cookstoves and go to my business is to be able to take my family to school as well as to get food and other family needs.”

Close-up view of a large herd of blue wildebeest (Connochaetes taurinus) crossing the Mara River in dust clouds, Serengeti National Park, Tanzania, Africa

Close up portrait of a Canadian Lynx (Lynx canadensis) on the move in the snow, Haines Junction, Yukon, Canada

Close-up portrait of a young male lion (Panthera leo leo) lowering head, Serengeti National Park, Tanzania, Africa

Close-up view of a herd of blue wildebeest (Connochaetes taurinus) crossing the Mara River in large numbers, Serengeti National Park, Tanzania, Africa

African Elephant (Loxodonta africana) cow and calf kicking up dust while walking through grassy plains, backlit by setting sun, Katavi National Park, Tanzania

Close-up of person's feet wearing spiked traction cleats while walking on ice through the famous Franz Josef Glacier; West Coast, New Zealand

Climbing metal steps up volcanic rock in the rain; Snaefellsbaer, Western Region, Iceland

Close-up of tail of cheetah (Acinonyx jubatus) in grass, Maasai Mara National Reserve, Kenya

Close-up of a Lioness (Panthera leo) walking through the low bushes in sunshine, Laikipia, Kenya

Green Street Light Downtown

Close-up of footprints in the sand along shoreline, golden afternoon with shadows

Hawaii, Oahu, Lanikai, Woman blurred close-up of woman walking on beach, water splashing

Thailand, Phuket, Close-up of footprints along the seashore.

Couple at Walking by water dressed up Hawaii

Hawaii, Oahu, Lanikai, Young girl stand up paddling.

Hyena cubs, Crocuta crocuta, walk out of their den site, ears perked up in the sunlight, Sabi Sands, Greater Kruger National Park, South Africa