Mercury is in household electronics and even light bulbs today. Because our homes are fairly small enclosed environments, the effect of a hazardous toxic chemical is ten fold. Here are some examples pertaining to our new CFL light bulbs that the electric companies and the government are marketing as "green" (earth friendly).
The URL below is a safety warning for the new CFL light bulbs. Not only do they have mercury in them, but the bulbs (especially from China) are a fire hazards.