It has been a bit since I featured a collection of free spatial datasets in my Free For All so it is time to break this streak! Here is a link to an excellent collection of raster and vector layers that span our globe put together by the fine folks at Stanford University Libraries. This collection of GIS data is broken out first by region and then by theme such as energy, land cover, society and more. This is one impressive collection of free data to say the least! One thing to note is that many of the datasets will require you to register in order to download them.
Until my next edition of the Free For All, happy hunting for free geospatial goodies!
Brock Adam McCarty