In the culture of TV, all candidates must have winning images, or they'll get nowhere fast.

CNN: 'The Bush Dyslexicon' author Mark Crispin Miller

But when the TV isn't showing images of people winning medals it will be a very different story.

CNN: Staying out in the cold: Olympic killjoys?

The Shanghai Corporate Pavilion at the World Expo, funded by local state enterprises, commissioned a Pulitzer-prize-winning photographer, Liu Heung Shing, to compile a book of images of Shanghai's history, giving him unprecedented access to the city's archives.

ECONOMIST: Shanghai's history

The final cut -- winnowed to 185 images for the show and 75 for the award-winning book -- shows the West's myriad faces thematically grouped into Legends, Encounters, Boundaries and Visions, corralling into categories an epic visual record of almost a century and a half of exploration of the American West with the camera.

CNN: Greatest photos of the American West