Earthtrends
Information on global environmental issues.
edited by World Resources Institute - USA

Encharta
On-line Encyclopedia.
edited by Microsoft

Enciclopedia Parolevive
edited by THEA srl

Enciclopedia on line di Sapere.it
edited by di De Agostini

Galleria Multimediale di Scienza e Tecnica di Sapere.it
edited by De Agostini

La guida visuale di Sapere.it
edited by De Agostini

Iconographic Atlas:
Mammiferi - Uccelli - Orchidee
edited by ENEL
with the contribution of Ministero dell'Ambiente e della Tutela del Territorio

Science on line
edited by American Association for the Advancement of Science with the contribution of the Stanford University's HighWire Press

Interactive Timelines
edited by Encyclopedia Britannica

Eduspace
edited by ESA (European Space Agency)

DIA (Digital Image Archive)
Multimedial didactics resource for the schools.
edited by INDIRE & MIUR