The cave's co-discoverer revisits Kartchner often, and finds it still amazes him 40 years later. A tireless evangelist for the cave he still refers to as "Xanadu", Gary Tenen invited Mark Duggan to accompany him on a recent trip underground.
One of America's leading planetary scientists talks about the ongoing exploration of Saturn and its moons. She'll be in Tucson to present at SPACEFEST III (June 2nd - 5th, 2011).
AZPM is a service of the University of Arizona and our broadcast stations are licensed to the Arizona Board of Regents who hold the trademarks for Arizona Public Media and AZPM. We respectfully acknowledge the University of Arizona is on the land and territories of Indigenous peoples.