Russell, will you take an intervention? I've got Huw Irranca-Davies wanting to make an intervention.

Russell, a wnewch chi dderbyn ymyriad? Mae Huw Irranca-Davies eisiau gwneud ymyriad.

I think the point I made about that, and I'll make it again, was that these are decisions that, yes, we can look at in the context of today, but we should be looking at in the context of years. We've been talking for a long, long time about the need to think transformatively about how we spend money on health and social care - it hasn't happened. Now, as a result of the parliamentary review, perhaps we might see some change, but this is a failure on behalf of nearly 20 years of a Labour-led Government.

Rwy'n credu mai'r pwynt a wnes i ynghylch hynny, ac fe'i gwnaf ef eto, oedd bod y rhain yn benderfyniadau, ydynt, y gallwn edrych arnyn nhw yng nghyd-destun heddiw, ond y dylem ni fod yn edrych arnyn nhw yng nghyd-destun blynyddoedd. Rydym ni wedi bod yn siarad am amser maith am yr angen i feddwl yn drawsffurfiol ynghylch sut yr ydym ni'n gwario arian ar iechyd a gofal cymdeithasol - nid yw wedi digwydd. Bellach, o ganlyniad i'r adolygiad seneddol, efallai y byddwn ni'n gweld rhywfaint o newid, ond mae hyn yn fethiant ar ran bron i 20 mlynedd o Lywodraeth a arweinir gan Lafur.

We all welcome the long-awaited clean air Act in the programme for government. It has a lot of support here in the Senedd and beyond. In April last year, I called on our cities and towns to be more considerate of people, suggesting closing Castle Street in front of the castle to create a nice public place. I was pleased that Cardiff Council did close the street for public vehicles, but we're very disappointed that there are discussions about making a u-turn.

Rydym ni i gyd yn croesawu'r Ddeddf aer glân hirddisgwyliedig yn y rhaglen lywodraethu. Mae ganddi lwyth o gefnogaeth yma yn y Senedd a thu hwnt. Fis Ebrill y llynedd, gwnes i alw ar ein trefi a'n dinasoedd i fod yn fwy ystyriol o bobl, gan awgrymu cau Stryd y Castell o flaen Castell Caerdydd er mwyn creu man cyhoeddus dymunol. Roeddwn i'n falch iawn bod hynny wedi digwydd, bod Cyngor Caerdydd wedi cau'r stryd ar gyfer cerbydau cyhoeddus, ond mae e'n siomedig iawn bod yna drafodaethau nawr a bod yna sôn am dro pedol yn cael ei grybwyll.

Good morning. I'd like to hear your views as to why we need to change or reform the curriculum in such a fundamental manner, and in your view, what evidence is there to demonstrate that the new curriculum will lead to school improvement and raising the standards?

Bore da. Hoffwn i gael eich barn chi ynglŷn â pham bod angen newid neu ddiwygio y cwricwlwm mewn ffordd mor sylweddol, ac yn eich barn chi, pa dystiolaeth - pa dystiolaeth; nid jest barn, ond tystiolaeth - sydd i ddangos y bydd y cwricwlwm newydd yn arwain at wella ysgolion a chodi safonau?

I wanted to speak in this debate because I've been contacted by constituents who have concerns. I think we enter and start a dangerous precedent if we begin questioning the views of scientific experts. I think we've seen that problem in our politics in recent times and I think it's becoming ever more prevalent. I think we must accept that the tests that took place in 2009, 2013 and 2017 were right to find there were no radiological risk to human health or the environment. But having said that - [ Interruption.] I'll give way, yes.

Roeddwn am siarad yn y ddadl hon oherwydd bod etholwyr pryderus wedi cysylltu â mi. Rwy'n credu ein bod yn dechrau cynsail beryglus os ydym yn dechrau cwestiynu barn arbenigwyr gwyddonol. Credaf ein bod wedi gweld y broblem honno yn ein gwleidyddiaeth yn ddiweddar ac mae'n dod yn fwyfwy cyffredin. Credaf fod yn rhaid inni dderbyn bod y profion a gynhaliwyd yn 2009, 2013 a 2017 yn iawn i ganfod nad oedd unrhyw risg radiolegol i iechyd pobl neu i'r amgylchedd. Ond wedi dweud hynny - [ T orri ar draws.] Fe ildiaf, gwnaf.