Dear Action Line: What are you supposed to do with mercury waste? My grandparents still have the old-style mercury thermometers. Isn't mercury dangerous? -- M.C., Tulsa. Mercury is very dangerous. Old ...

Mercury can be found in a variety of non-laboratory items such as fluorescent light bulbs, thermometers, older pressure gauges, plumbing traps, manometers, barometer, thermostats, capacitors, and ...

Mercury is a somewhat different metal in that it is liquid when most other metals are solid. It has a silvery-gray color, and although many thermometers today are digital, mercury is often used in ...