Largest known earthquake database with statistics and information about locations, magnitudes, with google earth support, search engine and RSS feeds

Learn all about gears. Read articles on different kinds of gears and gear technology.

Browse all the currently known volcanoes with map locations, times of eruptions and much more!

Consumer guides, technical instructions, and industry information on photovoltaic products including solar panel kits, solar power systems, solar water heaters, and other products powered by solar energy.

Portail annuaire qui propose des liens vers des ressources pédagogiques pour l'enseignement primaire et secondaire. Le répertoire s'adresse principalement aux intervenants et spécialistes du monde scolaire francophone, les élèves et les parents.