KnowledgeWeb is amazing! It's a project by James Burke, author of the famous Connections TV series. The goal of the project is "mapping the accomplishments of the past and the possibilities of the future". It will map virtually and visually the most important advances, technological developments, turning points, people and places in human history (and in its future too), connect them and make the final result explorable in an easy and fun way. This is planned as an educational tool, but it can also be used for thinking (about future and present).