Q&A for professional and enthusiast programmers
Joined 2 years ago, last seen today
Q&A for active researchers, academics and students of physics
Joined 2 years ago, last seen 2 months ago
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Joined 1 year ago, last seen 1 month ago
Q&A for science fiction and fantasy enthusiasts
Joined 2 years ago, last seen 7 months ago