http://globe.gov/explore-science/scientists-blog/archived-posts/sciblog/2006/11/29/taking-gps-readings-part-i/?utm_source=rss&utm_medium=rss&utm_campaign=taking-gps-readings-part-i Tue, 25 Mar 2014 04:27:31 +0000 hourly 1 http://wordpress.org/?v=