"If you have a story you want future generations to hear, you can always write a memoir. But modern technology is on the verge of enabling a much richer experience: a holographic display that makes it appear as if you're in the room with the viewer, and a life's worth of stories available for the asking.That's the promise of the University of Southern California's New Dimensions in Testimony project, and while the recording process is strenuous, the results are remarkable."

Snow brings a strange silence. No more so than in the vastness of Auschwitz-Birkenau, where on Jan. 27 we all began several months of remembering the unfolding of the liberation of the Nazi camps 70 years ago. That day, I walked alongside Los Angeles resident Dario Gabbai in the soft glow of candles and the shuffle of feet in freshly fallen snow.