In early 2005 the International Center of Photography in New York City placed on display a number of early daguerreotypes—one of the earliest forms of photography. Within a month spots and hazing began to mar the images. As Daniel Grushkin recounts in "Nano-Scientists Attempt to Save Disintegrating Artworks," a team of conservators and physicists set out to attempt to understand the nanochemistry that was destroying the 150-year-old artworks. These three images from the exhibit demonstrate how these relics of the recent past began to fade before museumgoers' eyes.

View the Early Daguerreotypes Slide Show