We've all heard the jokes about how many so-and-so's it may or may not take to change a lightbulb. Jokes aside, replacing a burned-out bulb ranks high on any list encompassing the most common projects ...

An ultra-efficient light bulb that you can dim with a regular light switch has been invented by a trio of engineers from Toronto. Gimmy Chu, Tom Rodinger and Christian Yan of Nanoleaf, now based in ...