Here's a "real life sci-fi" story worth sharing. You might have heard on the news that Steve Fossett (aviator, adventurer) is missing. His plane went down somewhere near Powell Canyon, Nevada and hasn't be found, after over a week of searching.
Well, you can actually help look for him online. A fresh satellite image of the area is available, and they set up a very easy-to-use site on Amazon where you can scan little areas of the image, looking for the plane.
Start here: http://www.stevefossett.com/
It's a fascinating demonstration of just how big the wilderness can be. Feel free to grab their Google Earth KML file of the area and zoom around. Millions of trees, thousands of ridges and hills, an endless stretch of wasteland.
And there was a weird estimate in a CNN article that there may be over 100 older crashed planes in this area, never found. So it's an area well worth exploring. We're used to being in safe homes and familiar streets -- but when a person gets lost the world is effectively infinite.