The Wikipedia article on Peter Masak is scheduled to be featured in
tomorrow's update of the "Did you know" section of the Wikipedia main
page as follows:

Did you know...that American inventor Peter Masak developed glider
winglets for gliding competitions that helped him win a U.S. national
championship, and became standard equipment on new high-performance
sailplanes in less than 10 years?

You can read (and update) the article he

http://en.wikipedia.org/wiki/Peter_Masak