It must be Friday.
Here is a map of UFO sightings in the US. Whilst, the environmental angle is admittedly rather weak, I reckon I can pin this on "globalisation" and at least "new economic geography".
For example, is there a correlation between income and UFO sightings? Some spatial econometrics would be needed to account for cross-sectional correlations.
To see the map in more detail and some comments such as the fact that "Aliens prefer to live out West" but "not in the deep south" see
UFO Hotspots Map [Strange Maps]