Hot spots and tunnels to neighboring "superbubbles" seem to have been created by supernovas and infant star outbursts.

Here are a dozen of the most unusual Christmas traditions from around the world. St. Nick’s devil-like counterpart, Krampus — celebrated throughout Germany, Austria, Czechia, Slovenia, ...

Baghdad was born from a precise plan: apparently, the city was designed as round, and was located in an advantageous position, intersecting an important trade route.