MADISON, Wis. - A researcher from the University of Wisconsin at Madison has figured out a better way to slice cheese — just use a laser. "At any other university, people would have just laughed. But this is Wisconsin. It's cheese. And this is no laughing matter," said Xiaochun Li, a mechanical engineering professor and laser expert. Traditional cheese processing has a number of shortcomings, he said. Large cutting machines require considerable care to keep cheese from becoming contaminated by bacteria. And it's impossible to slice cheese very thin because it tears or sticks to the cutting blade. But now...