Types of Volcanoes [ http://volcanodb.com/ ]
This is a free online volcano database, with information about all the currently known volcanoes. Every volcano features the basic statistics, as well as a very detailed map, with bot urban and satellite photos, and a google earth placeholder. - [ Read more ]

Tsunamis [ http://tsunami.name ]
Professional tsunami database with information about the currently known tsunamis in history, with RSS feeds and a tsunami search engine. - [ Read more ]