At 29-years-old -- Alexandria Ocasio-Cortez is the youngest woman ever elected into the U.S Congress. She talks to Anderson Cooper about her plans to combat climate change and more. In an interview with Scott Pelley -- Egyptian President Abdel Fattah el-Sisi denies estimates of 60-thousand political prisoners in his country. Lesley Stahl introduces us to Marshall Medoff -- an inventor -- not a scientist -- on a mission to fight global warming. Those stories on tonight's "60 Minutes."

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