A judge has struck down Los Angeles’ billboard ban, saying it runs afoul of the California Constitution’s protection of free speech. Superior Court Judge Luis A. Lavin’s decision hands a ...

But what if those billboards could deliver more personalized messages? Advertisers in the U.K. have developed a new kind of billboard, which changes ads depending on the type of car you drive.

San Francisco is one of the most famously creative cities in the world. It’s a cultural wonderland that has played host to many of the most important counter-cultural movements of ...