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Mae’n ddrwg gennym ‘dyw’r bennod yma ddim ar gael ar hyn o bryd

Y tro hwn, mae'r Athro Siwan Davies yn parhau â'i thaith o amgylch Califfornia. In California, Prof Davies meets families without running water in their homes as a result of the drought.

23 o funudau

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Maw 23 Tach 202112:05
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Rhagor o benodau

Blaenorol

California #1Cyfres 2

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NorwyCyfres 2

Gweld holl benodau Her yr Hinsawdd

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