Beti George yn holi'r ffisegydd atmosfferig, yr Athro Huw Cathan Davies. Beti George interviews atmospheric physicist Professor Huw Cathan Davies OBE.
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Beti George yn holi'r ffisegydd atmosfferig, yr Athro Huw Cathan Davies. Beti George interviews atmospheric physicist Professor Huw Cathan Davies OBE.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
