First lady Laura Bush and National Park Service Director Fran Mainella talk to students from Warren-Prescott school in Boston about the lessons they are learning as part of Ball State's Electronic Field Trip "Exploring Nature's Plumbing System," a live interactive event from Carlsbad Caverns, N.M., that allowed 37 million children and community members from all 50 states and seven countries to learn about the caverns. The remote hookup from Boston allowed the students and these special guests to interact with students and experts in New Mexico. Mrs. Bush also answered several questions from the children. (Photo by Cig Harvey)