View along congested street in Havana Centro showing people walking along pavements, traffic on the road and a red American car crossing intersection, Havana, Cuba, West Indies, Central America

View of high rise buildings and traffic congestion on Rama IV in hazy evening light, from the roof of Hotel Sofitel So, Sathorn Road, Bangkok, Thailand, Southeast Asia, Asia

View of high rise buildings and traffic congestion on Rama IV in hazy evening light, from the roof of Hotel Sofitel So, Sathorn Road, Bangkok, Thailand, Southeast Asia, Asia

Morning Market, Brno, Czech Republic, Europe

Congested traffic on main road in central Beijing, China, Asia

Bicycles, china. Shanghai. Cyclist at a traffic light during rush hour

Crowded Wangfujing street and shops in Central Beijing, China

Cyclists and traffic on Beijing main street, Chang An Avenue, China

Imported Audi 4-wheel-drive vehicle in traffic on Xian main street, China

Traffic and pollution on motorway near the financial district of Xian, China

Traffic on Beijing main street, Chang An Avenue, China

Traffic congestion at a standstill in both directions on M25 motorway, London, United Kingdom

Car transporter lorries travelling among congested traffic on M1 motorway in Hertfordshire, United Kingdom

Traffic congestion at a standstill in both directions on M25 motorway, London, United Kingdom

Traffic congestion of cars and lorries travelling in both directions on M25 motorway, London, United Kingdom

Scooters and bikes on Nanjing Road, central Shanghai, China

Royal Mail lorry travelling slowly among heavily congested traffic on M1 motorway in Hertfordshire, United Kingdom

Imported BMW X5 4 wheel drive vehicle in traffic on Beijing main street, China

Traffic congestion cars and trucks on M25 motorway, London, United Kingdom

Congested traffic on Beijing motorway, China

Traffic congestion cars and trucks in all carriageways on M25 motorway, London, United Kingdom

Congested traffic on Beijing motorway downtown, China

Congested traffic on Beijing motorway, China

Footbridge over traffic on Beijing main street, China

Crowded Wangfujing street and shops in Central Beijing, China

Scooters and bikes on Nanjing Road, central Shanghai, China

Crowded street corner of Chang An Avenue and Wangfujing Street in Beijing, China

Volume of traffic travelling on freeway lanes, outskirts of Washington DC, USA

Congested traffic travelling on M1 motorway in Hertfordshire, United Kingdom

Crowded Wangfujing street and shops in Central Beijing, China

Heavy weight of traffic travelling on freeway lanes, outskirts of Washington DC, USA

A traffic jam on the narrow Fore Street in Port Isaac in Cornwall, UK, a village made famous by the TV series Doc Martin.

Rush hour traffic on the M6 Motorway near Preston, Lancashire, UK at dusk.

Vietnam street scene in hanoi with heavy traffic, especially bicycles and motorcycles

Vietnam street scene in hanoi with heavy traffic, especially bicycles and motorcycles

Street scene in Suihua, Heilongjiang, China, Asia

Floating Market, Bangkok, Thailand

Floating Market, Bangkok, Thailand

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.”

Mforo, Tanzania a village near Moshi, Tanzania. Solar Sister entrepreneur Fatma Mziray and her eldest daughter Zainabu Ramadhani, 19 cook lunch in her kitchen house using both a clean cookstove using wood and one using coal. One of her younger daughters, Nasma Ramadhani, age 5 helps out. 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.”

Gannets Cape Saint Mary's Newfoundland, Canada

Tokyo cityscape lit up at night, Tokyo, Japan

Vehicle on Highway, Seattle, Washington, United States of America

Traffic on the Golden Gate Bridge San Francisco California USA

Golden Gate Bridge San Francisco California USA

Lake Allos seen from the collar of the congested, in the background the refuge of Lake Allos dominated by Mount Pelat (3051m), Haut-Verdon, Mercantour National Park, Alps, France