“Catalyst” studies how, more than feelings, you can actually measure why it hurts when someone is excluded by others because of their identity.
In April 1944, Jewish prisoners Rudolf Vrba and Alfred Wetzler miraculously escaped from the Auschwitz concentration camp and fled through Nazi-occupied Poland to find refuge in Žilina, Slovakia, where they connected with the Jewish Underground. Once safe, they recounted what they left behind. Their harrowing testimony revealed the true horror of the Holocaust to the outside world, describing in forensic detail the gas chambers and the full extent of the Nazi extermination program.
There are still parts of our planet yet to be discovered. Explorer and naturalist Steve Backshall pursues incredible journeys and world firsts — unclimbed peaks, unexplored cave systems and uncharted landscapes — setting foot where no human has been before. "Expedition with Steve Backshall" comes to Arizona PBS Wednesdays at 9 p.m. starting Jan. 15.
From the remarkable octopus to a river of dreams, experience compelling stories of the natural world as "Nature" returns to Arizona PBS Wednesday nights at 7 p.m.