The color temperature of a light, measured in kelvins, is its most noticeable characteristic. A candle, at 1900 K, appears orange. Daylight, at 5500 K, is much whiter and bluer. A 5500-K bulb, however ...

Call it a light bulb fashion show. Naperville is soon to embark on a five-year, $6.3 million project to install new LED lights in more than 11,000 streetlights. But first, city staff members want to ...

Over the past 18 months, I have been home-testing LED light bulbs that are intended to replace the residential lighting that we all knew and loved — the 60-, 75- and 100-watt incandescent bulbs that ...