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Using an ultrafast femtosecond laser, researchers at Tufts University in Medford, Mass., were able to label, draw patterns on, and remove individual melanocytes cells from a species of frog tadpole (Xenopus) without damaging surrounding cells and tissues.

College professors offer little notice on buying class textbooks, so typically, students have little choice but to buy the books on campus. "[University bookstores] are good at making it easy and being right there," says Richard Mondello, a junior computer science major at Tufts University. "What they're not good at is giving students good prices." In Mondello's first semester at Tufts University in 2008, he spent $190 on a single physics textbook at the campus bookstore