About 12 years ago compact fluorescent bulbs came on the market. About 8 years ago I replaced every light bulb in my apartment with them. Why? They run a lot cooler and use a lot less electricity. This is not saying that you should go off into some enviro-friendly psycho recycling tirade. Just stop buying incandesent light bulbs please.
I have only had 1 of those lights ‘dim’ in 12 years. It still works, but it takes too long to come up to full brightness. I just replaced it and wondered why everyone seems to still be using edison bulbs.
Of course now that I think about it. The small amount of mercury these lights require to function should probably be noted before you dispose of them…
Coal power or heavy metals – ehh, you can’t win’em all.