Science fiction into reality: Nobel Prize honors laser work

New York • Scientists from the United States, Canada and France won the Nobel Prize in physics Tuesday for revolutionizing the use of lasers in research, finding ways to make them deliver more powerful flashes of light and even to act like tiny tweezers.Their work paved the way for laser eye surgery to improve vision and studies that can manipulate cells and their innards.Two winners also made history for other reasons. Arthur Ashkin, the American who developed "optical tweezers," became th