Examine Daily and seasonal changes:
What a difference 1 day makes in Maine with my video:
http://www.youtube.com/user/geographyube
What a difference 1 season makes, in West Virginia with my video:
http://www.youtube.com/user/geographyube
Other resources: Fielder’s Colorado 2000 book where he revisits sites photographed by Wm Henry Jackson in 1879.
Or, examine hundreds of years of change in Rome, via:
–Joseph Kerski