Foresight Institute  
   The Foresight Institute's goal is to guide emerging technologies (especially nanotechnology) to improve the human condition.
   http://www.foresight.org

Quantum Teleportation  
   An article about the teleportation of particles using Einstein-Podolsky-Rosen entanglement.
   http://www.research.ibm.com/quantuminfo/teleportation

Ultimate Biospheres  
   An explanation of the concept of the Dyson sphere.
   http://seds.lpl.arizona.edu/nodes/NODEv4n3-10.html

Bob Lazar Corner  
   Tom Mahood examines Robert Scott Lazar's claims of having worked on a top-secret anti-matter-powered, gravity-distorting UFO project.
   http://www.serve.com/mahood/lazar/lazarmn.htm

Geoffrey A. Landis  
   In addition to writing SF, Mr. Landis also does scientific research for NASA and the Ohio Aerospace Institute.
   http://www.sff.net/people/Geoffrey.Landis

Space Future  
   Pro-space exploration group. Includes an archive of space tourism work, with information on vehicles, tourism and star-drives.
   http://www.spacefuture.com

sci.astro FAQ  
   Frequently Asked Questions list for the Usenet newsgroup sci.astro. Includes sections on time, astrophysics, the solar system, extraterrestrial life, stars, galaxies, and a list of often-used acronyms.
   http://www.cis.ohio-state.edu/hypertext/faq/usenet-faqs/bygroup/sci/astro/top.html

Time Travel Message Board  
   Discuss the philosophical and physical ramifications of time travel, paradoxes, parallel universes, and related topics.
   http://www.network54.com/Hide/Forum/thread?forumid=185348&messageid=1015003839

SFcrowsnest.com: Weird Science Library  
   Articles on strange and weird science. Includes chickens being genetically modified to breath underwater, and plans to launch starships by blowing up atom bombs underneath them.
   http://www.computercrowsnest.com/library/lib_weird.htm

Dyson Spheres  
   Some sketches of dyson spheres.
   http://users.rcn.com/jasp.javanet/dyson/index.html

Technovelgy  
   Inventions by science fiction authors and movie makers.
   http://www.technovelgy.com/

Molumbia  
   E-journal with ruminations on the future of Homo Sapiens.
   http://www.molumbia.com/

The Official Time Travel Forum  
   Discusses aspects of time travel such as worm holes, black holes, and time travel in the media.
   http://www.timetravelforum.net/