Check out this great blog post in American Scientific that discusses data integrity, datums, projections, data relevancy (as its related to time).
Thursday February 28th at Noon ET, Jamie Chesser and Gillian Silvertand (both from The Nature Conservancy) will be hosting the third LIVE GIS Seminar Event demonstrating ArcGIS 10.1. The demonstrations will be based on the content in the NEW Understanding Coordinate Systems course – released about a week ago on www.conservationtraining.org.
There will be time for questions and answers at the end of the Seminar. There are still seats available for this LIVE GIS Seminar. You do have to register for the event. This event is FREE.
If you have any questions please do not hesitate to contact Jamie at firstname.lastname@example.org.