2007 law has been pushing up energy efficiency standards. Bulb makers and retailers have largely moved on. Bipartisan law signed by President Bush spurred remarkable innovation. There are two ways to ...

You may have heard by now: the classic incandescent light bulb is on its way out. Because incandescent light bulbs are some of the least efficient on the market—wasting up to 90% of electricity as ...

Say goodbye to the old-style light bulb. On Jan. 1 it will become illegal to manufacture or import 60- and 40-watt incandescent bulbs because of federally mandated efficiency standards signed into law ...

A familiar household staple — the 60-watt incandescent bulb, along with the 40-watt — is being phased out, and will soon be as obsolete as the rotary dial telephone It’s been 134 years since Thomas ...

Not all household incandescent light bulbs are going to disappear because they can't meet new federal efficiency standards. That's what some readers wanted to know, along with many other questions, ...