"Human beings need bright days and dark nights," McGowan says. So while LED bulbs are a good choice for the workplace, they're a poor choice for the bedside. But at least you won't have to worry ...

As the dark days of the debate over light bulbs suggest, when those changes are sensible, they will be met with a shrug rather than manufactured outrage.

The room went dark. Blinking, I rubbed my eyes ... “Need 60-, 75- and 100-watt light bulbs.” A few minutes later my phone buzzed with this reply: “Good luck with that!” ...

The dark and dreary days of winter are almost over ... who actually created the first working light bulb (and then collaborated with Thomas Edison, who had improved on his original plan), let's ...