The Opera and Ballet Theatre of Kosovo features a curving roof inspired by the Xhubleta, Kosovo's traditional folk skirt. The ...

For weeks, I'd been wrangling with my solar dealer about the panels it had installed on my roof months earlier ... resigned, and its stock cratered to less than $0.70 a share.

Many new houses these days are built with solar panels on the roof. (Tim Graham / Alamy Stock Photo) Because solar panels rely on sunlight, they only generate electricity during the daytime when ...