Her yr Hinsawdd

Yr Athro Siwan Davies sy'n esbonio mwy am oblygiadau'r newid hinsawdd presennol. Professor Siwan Davies looks into the effects of climate change.

Ar iPlayer

鈥橠yw鈥檙 rhaglen yma ddim ar gael ar 麻豆社 iPlayer ar hyn o bryd