An Outstanding World Building resource for your game

Image Source: NASA. http://apod.nasa.gov/apod/ap140515.html

From Steve Savage's Seventh Sanctum site (alliterate much?) I present for your interest the whole run of his Way With Worlds (again!) essay series, which I intend to plunder with abandon for developing my Traveller Universe. This series of articles is well worth reading, whether the 'world' is in the far future, the far past, or another dimension. Game Masters, adventure designers and fiction writers will all find useful stuff here. 

http://www.seventhsanctum.com/www/wwwfull.html