The prevalence of cold, blue energy-saving light bulbs might soon begin to fade. That’s according to researchers in the US, who claim to have discovered how to make traditional incandescent bulbs 100% ...

Light bulbs sold in the U.S. must have a minimum efficiency of 45 lumens per watt by July 2023. Jenner Images via Getty Images This week, the Department of Energy announced new rules to phase ...

New efficiency rules, more than a decade in the making, have taken effect, relegating Edison’s glowing orbs to the history books. By Hiroko Tabuchi Hiroko Tabuchi has reported on the climate toll of ...

The Trump administration plans to significantly weaken federal rules that would have forced Americans to use much more energy-efficient light bulbs, a move that could contribute to greenhouse gas ...