http://www.coasttocoastam.com/show/2009/12/10
Paola Harris provided some good commentary about J._Allen_Hynek & how various portals may exist throughout space & time. She also mentioned the Giants of Sardinia.
Ann Eller revealed some fascinating observations from her experience working for Dr AJ Hynek. She talked about some interdimensional portals & a parallel earth.
That's part of the storyline in the J._J._Abrams TV series Fringe.
Portals that lead to a similar earth, where the old WTC is still intact.
http://fringepedia.net/wiki/There%27s_More_Than_One_of_Everything