Scores of internally displaced Muslims are at the heart of the humanitarian crisis in Central African Republic, where violence between Christians and Muslims has threatened to spiral into genocide. Photo: An internally displaced woman carries her child in a camp for internally displaced people (IDPs), located at Bangui International Airport, April 10, 2014. (Photo by Goran Tomasevic/Reuters)

The Greenland ice sheet is a vast body of ice covering 660,235 sq miles, roughly 80% of the surface of Greenland. It is the second largest ice body in the world, after the Antarctic Ice Sheet. Some scientists predict that climate change may be near a "tipping point" where the entire ice sheet will melt in about 2000 years. If the entire 2,850,000 cubic kilometres (683,751 cu mi) of ice were to melt, it would lead to a global sea level rise of 7.2 m (23.6 ft).

Steve McCurry has been a one of the most iconic voices in contemporary photography for more than 30 years, with scores of magazine and book covers, over a dozen books, and countless exhibitions around the world to his name.

People don’t realize how much our exterior can affect our mood. If we make ourselves smile, we might feel a little better, yet if we frown, we soon get the irresistible urge to listen to Blues and weep over the days long gone. The same goes for our clothing. Many people, especially the elderly, tend to dress in the same old rags, without ever feeling the need to change something about their appearance. However, as Cue Qozop clearly demonstrates in his Spring – Autumn photoset, clothes can completely alter the appearance and the mood of the wearer. Elderly people dressed in young people’s clothes look much younger and happier. They look as if they are full of vigor and are about to set out on an amazing adventure.

Model Alba Carrillo attends “Glamour” beauty awards 2012 at Pacha Club on March 14, 2012 in Madrid, Spain. (Photo by Carlos Alvarez/Getty Images)

In this September 11, 2014 photo, villagers climb down the side of a hill used earlier as a dumping ground of asbestos waste on Roro hills in Roro, India. An asbestos mine, abandoned nearly three decades ago still affects the people around it and 18 along with Jema were diagnosed with asbestosis in 2012. Tens of thousands more, some former mine workers, remain untested and at risk. (Photo by Saurabh Das/AP Photo)

Vatnajökull (meaning Glacier of Rivers), also known as the Vatna Glacier, is the largest and most voluminous Icelandic glacier, and one of the largest in area in Europe. It is located in the south-east of the island, covering more than 8 percent of the country.