“Environmental Migrants: The Last Illusion” by photographer Alessandro Grassani, documents the life of people in Kenya, Mongolia and Bangladesh who migrate to escape environmental stresses to the city of their own countries in hopes for a better life. Here: Asia, Mongolia, March 27, 2011. A view of Ulaan Baator over the shoulder of a slumbering drunk. Alcoholism is a huge problem in the city, home to almost half of Mongolia's people. The capital's population has doubled in the past two years. High levels of unemployment and poverty await herders who abandon rural areas and arrive in the city, illiterate and untrained in any skills necessary for urban jobs. (Photo by Alessandro Grassani)

Reuters photographer Lucy Nicholson documented some of the migrant communities that live in Los Angeles. Los Angeles is a culturally thriving city and one of the most ethnically diverse in the United States, with a population that is 48.5 percent Latino and 11.3 percent Asian, according to a 2010 census. Immigration has become a hot button issue ahead of U.S. midterm elections on November 4, and despite arguments from the White House that legal migration benefits businesses, a recent opinion poll found most Americans believe migrants place a burden on the economy. (Photo by Lucy Nicholson/Reuters)

Photographer Gregg Segal travelled the world to document children and the food they eat in a week. Partly inspired by the increasing problems of childhood obesity, he tracked traditional regional diets as yet unaffected by globalisation, and ironically, found that the healthiest diets were often eaten by the least well off. (Photo by Gregg Segal/The Guardian)

“Mr. Brainwash (“MBW”) is a pseudonym for Thierry Guetta. According to the Banksy directed film Exit Through the Gift Shop, Guetta is a French citizen who now lives in Los Angeles, having been a proprietor of a clothing store and videographer who evolved into a street artist and gallery artist, influenced by the street artists he documented through video over the years. According to the film, Guetta was first introduced to street art by his cousin, the French street artist, Invader”. – Wikipedia

Photo: Artist Mr. Brainwash stands with his paintings “The Queen” (R) and “Kate Moss” at the Opera Gallery on October 3, 2011 in London, England. Works by pop artist and film maker Thierry Guetta, known as Mr. Brainwash, are on display at the gallery from October 6th to 31st, 2011. (Photo by Peter Macdiarmid/Getty Images)

In 1949, LIFE magazine sent famed photographer Nina Leen to document the daily life of a sassy troupe of young women who had run off and joined the famous Barnum & Bailey Circus in Sarasota, Fla. What developed was a portrait of a sisterhood formed over acrobatics that mixed high-flying wire acts with fashionable high-waisted shorts. Sarasota was once considered “the home of the American circus”. Here: an aerialist smoking while rehearsing for the Ringling Bros. and Barnum & Bailey Circus in Sarasota, FL in 1949. (Photo By Nina Leen/Time Life Pictures/Getty Images)

These may look like alien creatures from another planet, but the odd organisms are, in fact, colorful, microscopic life forms found in our forests. The bizarre slime molds, known as mycetozoa or fungus animals, were captured by geologist Valeriya Zvereva. She spent months documenting the common life forms that are found beneath our feet – but are rarely seen. Incredibly, the organisms can move and hunt for other microscopic life forms on which to feed. Zvereva, who is from Moscow, used a special macro lens to capture the vibrant and up-close shots, which show off the organisms’ unlikely beauty. (Photo by Valeriya Zvereva/Caters News)

“The Carnival Triumph finally made port on Thursday night, after what should have been an idyllic four-day cruise turned into a grueling week-long ordeal for more than 3,000 passengers and 1,000 crew. Some kissed the ground as they disembarked the ship, while others swore never to go on another cruise again. Many spoke of the well-documented unsanitary conditions on board the 272-metre Triumph, which lost power in the Gulf of Mexico on Sunday”. – Tom Dart and Adam Gabbatt via Guardian

Photo: Kendall Jenkins of Houston kisses the ground after stepping off the Carnival ship Triumph (Photo by AP Photo)

The ferocity of crises worldwide is forcing a record number of people to flee their homes, seeking some form of safety within their own country or across international borders. There are 65.3 million displaced people worldwide, including 21.3 million refugees. Most have lost their homes to armed conflict or natural disasters but other factors, such as extreme poverty and climate change, also drive displacement. The International Organisation for Migration commissioned photojournalist Muse Mohammed to document the plight of the displaced. (Photo by Muse Mohammed/IOM)