Sail planes are a great sport-below are a few links that may be of interest.
http://en.wikipedia.org/wiki/Glider
http://www.sailplanedirectory.com/ndxtype.htm
Full Version: Sail planes.
Tons of info on those sites.thank you DF
pappy ... ever fly in any of these machines? Wonder what they could do in very high altitude, in terms of distance, etc.? Do suspect that the pilot/passengers may need oxygen too! 
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