Conceptual artist and poet Jenny Holzer is known for her massive projections of poetry and political aphorisms across urban buildings around the world. Her words, cast in ephemeral light, slide along uneven facades, highlighting their form just as the form itself literally twists the words. Enormous though they are, it’s like someone speaking in a whisper–we try harder to listen, to read, as they climb. They won’t be there forever. Her current LED exhibit “Protect Protect” is on display at the Whitney Museum in New York until May 31, 2009. You can also check out videos of some of her work. Galleries of past projection projects are available on her Web site.