Click here to see Tümer’s photos.

Photo: Laurie Tümer.

In a segment this fall, Good Morning America simulated pesticide exposure in a New York City classroom. Using a powder visible only under black light, the program showed how far chemicals could spread through an activity as simple as child’s play.

The eye-opening exercise wasn’t news to Laurie Tümer. The photographer has been making images that expose the presence of synthetic pesticides since 1998, when she suffered near-fatal poisoning after her New Mexico home was sprayed. While recovering, Tümer discovered a muse in the work of Richard Fenske, an environmental scientist at the University of Washington. Fenske uses fluorescent tracer dyes and ultraviolet light to demonstrate how pesticides can spread to agricultural workers’ skin, even when protective gear is worn.

By spraying tracers on her shoes and walking through her garden, or superimposing dyes onto landscape-scale canvases, Tümer uses a similar technique to illustrate how and where pesticides travel. The result of her work, a growing collection she calls “Glowing Evidence,” is at once startling and stunning — she compares the patterns in it to constellations. Critics who’ve seen her images exhibited in Santa Fe have called them eerie, compelling, ingenious, and haunting.

Tümer’s 25-year photographic career, including a current collaboration with a blind poet, has focused on “seeing the invisible,” and was featured in a 2003 documentary of that name. But as work like hers becomes more visible, she says so-called political art is really nothing new. In fact, she traces her work to cave drawings. Like that ancient art form, Tümer says, her photographs are a forum for processing information, conveying dismay, and warning others.

Click here to see a gallery of Tümer’s photographs.