PBS News Weekend

March 17, 2019 (7x22)

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On this edition for Saturday, March 17, tributes pour in for the victims of the New Zealand terror attack, a look at how tidal currents are being harnessed to create power in Scotland, and what the earth beneath the oceans teaches us about climate change. Hari Sreenivasan anchors from the Lamont-Doherty Earth Observatory in New York.