For Science Fiction buffs

[Spiffu]

http://orbitalvector.com/Index.htm

A great collection of write ups on the technology of the future.

I came across it looking for stuff on Ring World (been reading the books lately) and I thought these were some thought provoking articles on some of the great pieces of artifacts of the greatest science fiction books and theoretical structures conjured up in the past 100 years.

Such as the Dyson Sphere, Ring world, and Xeelee Ring.