CDs

DVDs

Experts

Books

Thinking Mathematically by John Mason with Leone Burton & Kaye Stacey. Addison-Wesley 1997 Revised edition.
This is the best book I ever ran across that teaches in a fun and insightful way how to work on math problems and opens up a whole new way how to use ones mind. Fascinating!

Magazines

Projects

Videos

Farming With Nature: A Case Study of Successful Temperate Permaculture, 37 min., VHS, 2000.
Austrian farmers Sepp and Veronika Holzer have developed their 110-acre farm in the "Siberia" of Austria into a thriving, inspiring Permaculture demonstration site. Things like lemons and figs are growing there as well as plants like gentiana are propagated there, all of which the books say is not possible. There are many principles and techniques at work to make this a most persuasive demonstration of permaculture.