Christian Science Monitor: In a dimly lit Osram Sylvania lab humming with sensitive electronic equipment sits a potential environmental breakthrough – a glowing pink fluorescent bulb that may one day lead to super-energy-efficient lighting without mercury. Currently, all fluorescent lights – including energy-saving compact fluorescent bulbs – use at least a little toxic mercury. But before a new nonmercury lamp can become a hoped-for environmental turning point, it must become frugal with electricity, …