In 1971, the newly-created US Environmental Protection Agency (EPA) hired a bunch of freelance photographers to collectively document environmental issues around the country. They were given free rein to shoot whatever they wanted, and the project, named Documerica, lasted through 1977. After 40 years, the EPA is now encouraging photographers to take current versions of the original Documerica photos and are showcasing them on flickr at State of the Environment. There are location challenges, and a set has been created with some of the submissions, making side-by-side comparisons. [more inside]
The Great Wall of China (長城) took 2000 years to build, and stretches for 5500 miles. Yet pictures of that wonder of the world in popular media are typically restricted to the tourist-visited sections closest to Beijing. (There are several sections of the wall near that city.) Kuriositas has gathered some images that present the Wall from other areas.
Live, From Outer Space: rural fires [1, 2], The Haze in China [1 ,2, 3] and its movement, aerosols, and the brothers carbon monoxide [a photochemical smog agent] and carbon dioxide.