ANN ARBOR, Mich. (AP) - An artist at the University of Michigan has created a 40-foot robotic sculpture that explores the idea of borders and boundary conditions. The Ann Arbor News reports Chico MacMurtrie unveiled the "Border Crossers" statue outside the university's Museum of Art on Feb. 16. The robot can reach up several stories high, arc over a barrier and bend down to touch the other side. The university says the piece embodies the curiosity of wanting to see what lies on the other side of a border and expresses the desire to live in a world without borders. MacMurtrie has been working on the project with 16 students from the university's art and design, engineering, information and Literature, Science and the Arts programs though a residency sponsored by the Institute for the Humanities.