When it was first brought in as landfill tax, the reason was to stop local authorities just dumping, to make it no longer economically viable for them to just dump, and the additional cost meant that people started recycling, and it had a huge effect on recycling. So, when it first came in under the Government of Westminster, the aim was, almost exclusively, to try and change behaviour.

Pan gafodd ei chyflwyno yn gyntaf fel treth dirlenwi, y rheswm oedd atal awdurdodau lleol rhag dympio yn unig, i'w gwneud yn aneconomaidd yn ymarferol iddynt i ddim ond dympio, ac mae'r gost ychwanegol yn golygu bod pobl yn dechrau ailgylchu, ac mae wedi cael effaith fawr ar ailgylchu. Felly, pan gafodd ei chyflwyno yn gyntaf dan Lywodraeth San Steffan, y nod oedd, bron yn gyfan gwbl, ceisio newid arferion.

I will enlighten the Member on 13 December, Llywydd, when I publish the draft budget. It's not too long to wait now, but there's a lot of work which needs to be undertaken rapidly between now and then. But, on 13 December, we'll be publishing the Welsh Government draft budget alongside that whole suite of information that we always publish - the chief economist's report, our narrative that goes along with the document, and some of our other analysis as well. We always try to publish as much information in as much detail as we can.

Byddaf yn goleuo'r Aelod ar 13 Rhagfyr, Lywydd, pan fyddaf yn cyhoeddi'r gyllideb ddrafft. Nid oes llawer i aros tan hynny, ond mae llawer o waith y mae angen ei wneud yn gyflym rhwng nawr a'r adeg honno. Ond ar 13 Rhagfyr, byddwn yn cyhoeddi cyllideb ddrafft Llywodraeth Cymru ochr yn ochr â'r gyfres gyfan honno o wybodaeth rydym bob amser yn ei chyhoeddi - adroddiad y prif economegydd, ein naratif sy'n cyd-fynd â'r ddogfen, a rhywfaint o'n dadansoddiadau eraill hefyd. Rydym bob amser yn ceisio cyhoeddi cymaint o wybodaeth mewn cymaint o fanylder ag y gallwn.

Looking at the environmental impact assessment of the combustion engine, both diesel and petrol, I wonder what environmental impact assessment has been done on the air quality in school playgrounds, because I had a visit today from St Teilo's Church in Wales High School, where I'm also a governor, and that is one of the schools identified by ClientEarth as one of 1,000 schools across the UK that is suffering from really damaging levels of air pollution because of their proximity to roads. I just wondered how many of these nearly 1,000 schools are in Wales.

Gan edrych ar asesiad o effaith amgylcheddol yr injan hylosgi, diesel a phetrol fel ei gilydd, tybed pa asesiad o effaith amgylcheddol a wnaed ar ansawdd yr aer ar feysydd chwarae ysgolion, oherwydd bu Ysgol Uwchradd yr Eglwys yng Nghymru Teilo Sant, lle rwyf hefyd yn llywodraethwr, yn ymweld â mi heddiw, ac mae honno'n un o'r 1,000 o ysgolion ledled y DU y nododd ClientEarth eu bod yn dioddef o ganlyniad i lefelau niweidiol iawn o lygredd aer am eu bod yn agos at ffyrdd. Tybed sawl un o'r bron i 1,000 o ysgolion hyn sydd yng Nghymru.

Absolutely; I can give that guarantee. One of the elements of the package we've offered is a €2 million sum for skills and training. Of course, we've worked very closely with the industry in years gone by to make sure that we're able to assist them with bespoke training packages. We see, of course, the result in the highly specialised work that's carried out in the Member's constituency.

Yn sicr; gallaf roi'r sicrwydd hwnnw. Un o elfennau'r pecyn yr ydym ni wedi ei gynnig yw swm o €2 filiwn ar gyfer sgiliau a hyfforddiant. Wrth gwrs, rydym ni wedi gweithio'n agos iawn gyda'r diwydiant yn y blynyddoedd a fu i wneud yn siŵr ein bod yn gallu eu cynorthwyo gyda phecynnau hyfforddiant pwrpasol. Rydym ni'n gweld, wrth gwrs, canlyniad y gwaith arbenigol iawn sy'n cael ei wneud yn etholaeth yr Aelod.