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).
The U of A welcomes home a prominent alumna to give the 2011 commencement speech. Hear how Savannah's successful career started, and about the big change in her future.
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