PBS NewsHour

March 17, 2019 - PBS NewsHour Weekend full episode

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

Uncovering the history of Earth’s climate

5m 55s

To understand the history of climate change, researchers are digging underneath the ocean floor where organisms and plants have accumulated in sediment over millennia. Maureen Raymo studies this science of paleoclimatology using a vast collection of materials at Columbia University’s Lamont-Doherty Earth Observatory. NewsHour Weekend's Hari Sreenivasan reports.

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