The freely redistributable hypertext "Human Knowledge 2000"
is available at http://humanknowledge.net and includes
a section on futurology:
5.7. Futurology
5.7.1. Impossible Advances
5.7.2. Improbable Advances
5.7.3. Academic Developments
5.7.4. Technological Developments
5.7.5. Industrial Developments
5.7.6. Sociopolitical Developments
5.7.7. Challenges
5.7.8. Possible Catastrophes
5.7.9. Timeline