Satellite photos: what interesting features can be seen or measured in them (or other aerial photos), and where can I get a supply of images? [more inside]
posted by k. on Sep 30, 2009 - 12 answers

Help me re-find a cartogram-like picture of the 100 largest cities by population. [more inside]
posted by brownbat on Sep 28, 2008 - 6 answers

Is there open, free, or inexpensive comprehensive data on the location of coal-fired power plants in the United States available anywhere? [more inside]
posted by OverlappingElvis on May 28, 2008 - 5 answers

What's the easiest way of generating a map similar to this? I have several state-level data series I want to display on maps of India. [more inside]
posted by matthewr on Mar 23, 2008 - 6 answers

What about London should I map? [more inside]
posted by viewofdelft on Feb 21, 2008 - 21 answers