Carrier Pigeons Follow Highways

Carrier pigeons tend to use man-made structures (was http://radio.weblogs.com/0105910/2004/07/28.html#a919 marked bad) to navigate. Must have been much easier with Roman roads, no?

Confluences

Confluence project is trying to visit and photograph all of the map gridline nexi in the world. The linked page is for the UK. It would be interesting to stitch these together in a scrollable globe.

Vischeck: VischeckURL

Vischeck allows you to see the online world through red-green colour blind eyes. Very interesting, and confirms the slightly “sepia” look to the world that people like Mark Adamson have talked about.