Govt. wants us to use green lightbulbs (to conserve energy), yet they have to be?

Incandescent bulbs contain less mercury, but they use more energy, which creates power plant waste. Because of that they actually produce ~5x more mercury in the long run (5.8mg compared to 1.2 mg). Still, bulbs should not have mercury in them. LED lights are a better alternative than CFLs and incandescents environmentally because they are even more efficient and don't contain mercury. The only problem is the expense, but that should come down in the coming years.