URLs listed in this category:
Zip code Maps
Provides detailed map of all US zip codes, powered by google map. You can find each zip code with a google map and link to city, states. You also find the link for details demographic information of each zip code.
http://www.myzipcodemap.com/
Zip Code Database
Find zip codes with ease at the zip code database.
http://www.zip-code-database.org
Earthquake Statistics
Professional earthquake database with information about the currently known earthquakes in history, with RSS feeds and an earthquake
http://earthquakedb.com
Tsunamis
Professional tsunami database with information about the currently known tsunamis in history, with RSS feeds and a tsunami search engine
http://tsunami.name
Volcanoes Information
Browse all the currently known volcanoes with map locations, times of eruptions and much more!
http://volcanodb.com