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Here are clips which show how the growth in scientific inventions in the 20th century was part of a revolution in technology, engineering and communication. Learning STEM subjects has also contributed to the interest in science. The 20th century was also an era where the natural world and environmental changes received a lot of people's attention.
Please note that English subtitles are available for some of the Welsh-language clips, and we are in the process of adding subtitles to the remaining ones.
To browse the Wales Broadcast Archive yourself and find many more videos that can support your curriculum, click the button below. We currently have over 7,000 clips from BBC, ITV and S4C available online to all, and over 400,000 clips available to view in a clip corner.
Eirlys Britton a Gareth Lewis yn edrych ar bontydd ym Mhontypridd
Language: Welsh
Eirlys Britton and Gareth Lewis look at bridges in Pontypridd. 02/10/1984 Hwnt ac Yma: Ddoe a Heddiw BBC Cymru Wales
Location: Pontypridd, Rhondda Cynon Taf
CLIP Cymru: Eirlys Britton a Gareth Lewis yn edrych ar bontydd ym Mhontypridd
Third Menai Crossing
Language: English
Glyn Owen reporting on the prospect of a road bridge over the Menai Straits above the existing railway bridge including views of the A5 road, traffic moving over the Menai Suspension Bridge and the Britannia Tubular Railway Bridge with a train in the tunnel. 28/08/1968 Wales Today BBC Cymru Wales
Location: Brittania Bridge, Anglesey and Gwynedd
Cwmni Cyfrifiaduron Peirianneg Llŷn
Language: Welsh
Interview with a computer engineer working for "Peirianneg Llŷn" in Abersoch and a director of Recordiau Sain who is working with the company. 28/03/1977 Heddiw BBC Cymru Wales
Location: Abersoch, Gwynedd
Cyfweliad gyda'r hanesydd Watkin William Price (1873-1967)
Language: Welsh
What was it like to keep and research information before the internet? Lena Harries interviewing Watkin William Price (1873-1967) teacher, local historian and socialist at his home in Aberdare. 02/08/1961 Wales Today BBC Cymru Wales
Location: Aberdare, Rhondda Cynon Taf
Pennod o'r rhaglen blant Bilidowcar gydag Angharad Mair yn blasu can o laeth
Language: Welsh
Will people in the future drink milk from cans? Angharad Mair in the studio tasting a can of milk. 21/05/1986 Bilidowcar BBC Cymru Wales
CLIP Cymru: Pennod o'r rhaglen blant Bilidowcar gydag Angharad Mair yn blasu can o laeth
Pennod o'r rhaglen Bilidowcar gydag Angharad Mair ac Emyr Davies yn yr Aifft
Language: Welsh
Angharad Mair and Emyr Davies visiting the Pyramids in Egypt on children’s programme ‘Bilidowcar’ 01/04/1987 Bilidowcar BBC Cymru Wales
Location: Giza, Egypt
CLIP Cymru: Pennod o'r rhaglen Bilidowcar gydag Angharad Mair ac Emyr Davies yn yr Aifft
Adeiladu Argae Clywedog
Language: Welsh
Hywel Gwynfryn report on the construction of the Clywedog Dam and the farms that will be drowned. 20/05/1966 Heddiw BBC Cymru Wales
Location: Clywedog, Powys
Emrys Jones yn adrodd o swyddfa ddidoli'r G.P.O., Farringdon Road, Llundain
Language: Welsh
Emrys Jones reporting from the G.P.O. sorting office at Farringdon Road in London about the use of underground rail network to move hundreds of letters and parcels around London every day. Heddiw 03/07/1974 BBC Cymru Wales
Location: London
CLIP Cymru: Emrys Jones yn adrodd o swyddfa ddidoli'r G.P.O., Farringdon Road, Llundain
Report on safety issues for the Trawsfynydd nuclear power station
Language: English
Report on safety issues for the Trawsfynydd nuclear power station. Interviews with a local councillor, police and local residents. 31/03/1971 Wales Today BBC Cymru Wales
Location: Trawsfynydd, Gwynedd
CLIP Cymru: Report on safety issues for the Trawsfynydd nuclear power station
Cyflwynydd mewn siop yn delio gydag arian degol.
Language: Welsh
Presenter in a shop working with the new pence and dealing with decimal currency. 02/11/1970 Heddiw BBC Cymru Wales
Location: Criccieth, Gwynedd
CLIP Cymru: Cyflwynydd mewn siop yn delio gydag arian degol.
Report from Cardiff on the introduction of VAT
Language: English
Adroddiad ar gyflwyno TAW. Cyfweliadau ag aelodau o'r cyhoedd yng Nghaerdydd a Chyfarwyddwr Canolfan Chwaraeon Cenedlaethol Cymru ar effeithiau ei chyflwyno mewn lleoliadau chwaraeon. 02/04/1973 Wales Today BBC Cymru Wales
Location: Cardiff
Film of workers making coins in the Royal Mint in Llantrisant
Language: English
Ffilm o weithwyr yn gwneud darnau arian yn y Bathdy Brenhinol yn Llantrisant 11/04/1980 Wales Today BBC Cymru Wales
Lleoliad: Llantrisant, Bro Morgannwg
CLIP Cymru: Film of workers making coins in the Royal Mint in Llantrisant
Irfon Jones yn adrodd am lifogydd difrifol dros nos ym Mhontypridd
Language: Welsh
Irfon Jones reports on serious overnight flooding in Pontypridd. Interviews with Gordon Davies and John Rowlands. 02/12/1999 Newyddion BBC Cymru Wales
Location: Pontypridd, Rhondda Cynon Taf
CLIP Cymru: Irfon Jones yn adrodd am lifogydd difrifol dros nos ym Mhontypridd
Aflonyddwch yn Abertawe
Language: Welsh
Hywel Gwynfryn reporting on a house in Rhondda Street, Swansea where the Howells family experienced disturbances. He mentions Andrew Mackenzie’s book ‘The Unexplained’ which suggests that the hauntings are due to heavy rain affecting the foundations. 22/11/1966 Heddiw BBC Cymru Wales
Location: Swansea
Adroddiad ar effaith gwanwyn gwlyb ar gynhyrchu bwyd
Language: Welsh
Report on the impact on a wet spring on food production. Interview with a farmer about the added costs and the low level of financial support offered. 28/04/1970 Heddiw BBC Cymru Wales
CLIP Cymru: Adroddiad ar effaith gwanwyn gwlyb ar gynhyrchu bwyd
George Ashwell reporting from Rhossili, Gower with zoological students from Reading University
Language: English
George Ashwell reporting from Rhossili, Gower where zoological students from Reading University have made a temporary laboratory in the Worms Head hotel. Interview with Prof. Alistair Graham. 12/05/1965 Wales Today BBC Cymru Wales
Location: Rhosili, Gower
Eira Mawr 1982 yn Aberdaron
Language: Welsh
The reporter is towed into Aberdaron cut off by snowdrifts as children play in the snow with interviews with Aberdaron residents. 26/10/1982 Heddiw Ddoe BBC Cymru Wales
Lleoliad: Aberdaron, Gwynedd
Clearing snow in Pontypridd during the cold winter of 1982
Language: English
Clearing snow in Pontypridd during the cold winter of 1982. 14/01/1982 Wales Today BBC Cymru Wales
Location: Pontypridd, Rhondda Cynon Taf
CLIP Cymru: Clearing snow in Pontypridd during the cold winter of 1982
Adroddiad ar effaith tirlithriad ym Mhontypridd
Iaith: Cymraeg
Report on the impact of a landslip in Pontypridd. Interview on the use of a school for local residents who were affected. 01/15/1973 Heddiw BBC Cymru Wales
Lleoliad: Pontypridd, Rhondda Cynon Taf
Nick Webb reports on severe flooding in the Cynon Valley and Pontypridd
Language: English
Nick Webb reports on severe flooding in the Cynon Valley and Pontypridd. Interviews with residents Joan McGrath, Alan Cole and Joyce Howells. Interview with Cllr Alan Bevan. 02/12/1992 Wales Today BBC Cymru Wales
Location: Cynon valley, Rhondda Cynon Taf & Pontypridd, Rhondda Cynon Taf
CLIP Cymru: Nick Webb reports on severe flooding in the Cynon Valley and Pontypridd
Report on floods in Aberavon following work on the riverbanks
Language: English
Report on floods in Aberavon following work on the riverbanks. Interviews with residents. 13/11/1972 Wales Today BBC Cymru Wales
Location: Aberavon, Neath Port Talbot
CLIP Cymru: Report on floods in Aberavon following work on the river banks
Report into the effects of climate change in Wales with film of floods in the Conwy valley
Language: English
Investigative report into the effects of climate change in Wales with film of floods in the Conwy valley. 23/06/2006 Week In Week Out: Wilder Wales BBC Cymru Wales
Location: Trefriw, Conwy
Eurig Wyn yn adrodd o Burfa Amoco, Aberdaugleddau ar adeiladu purfa newydd
Language: Welsh
Eurig Wyn reports from the Amoco refinery on the building of a new refinery. 11/05/1973 Heddiw BBC Cymru Wales
Location: Milford Haven, Pembrokeshire
CLIP Cymru: Eurig Wyn yn adrodd o Burfa Amoco, Aberdaugleddau ar adeiladu purfa newydd
Adroddiad ar ddrilio ffynnon olew archwiliadol ym Maesteg
Language: Welsh
Report on the drilling of an exploratory oil well in Maesteg by a Canadian company. 14/05/1973 Heddiw BBC Cymru Wales
Location: Maesteg, Bridgend
CLIP Cymru: Adroddiad ar ddrilio ffynnon olew archwiliadol ym Maesteg
Bob Humphreys reports on telegram services in Wales
Language: English
Bob Humphreys reports on telegram services in Wales. Film of Post Office workers in Cardiff processing and delivering telegram. 03/04/1980 Wales Today BBC Cymru
Location: Cardiff
CLIP Cymru: Bob Humphreys reports on telegram services in Wales
Rhaglen yn dathlu 50 mlynedd o ddarlledu o Fangor gyda Dafydd Huw Williams
Language: Welsh
Programme celebrating 50 years of broadcasting from Bangor with Dafydd Huw Williams introducing the staff & their contributions over the years. Interview with R. Alun EVANS, Head of Production. 12/11/1985 Babi ar ei Brifiant BBC Cymru Wales
Location: Bangor, Gwynedd
CLIP Cymru: Rhaglen yn dathlu 50 mlynedd o ddarlledu o Fangor gyda Dafydd Huw Williams
Film of David Parry-Jones recording a piece to camera with television technicians
Language: English
Film of David Parry-Jones recording a piece to camera with a cameraman, sound recordist and lighting man. Film editor synching the sound and vision. 14/03/1975 Let's Look at Wales: Making a TV Programme BBC Cymru Wales
CLIP Cymru: Film of David Parry-Jones recording a piece to camera with television technicians
David Parry-Jones interviews Meirion Edwards who demonstrates vision mixing
Language: English
David Parry-Jones interviews Meirion Edwards who demonstrates vision mixing. He visits the vision and lighting control unit with a technical manager. 14/03/1975 Let's Look at Wales: Making a Television Programme BBC Cymru Wales
CLIP Cymru: David Parry-Jones interviews Meirion Edwards who demonstrates vision mixing
David Parry-Jones reports from the Wenvoe television transmitter
Language: English
David Parry-Jones reports from the Wenvoe television transmitter on how television programmes are broadcast around Wales. 14/03/1975 Let's Look at Wales: Making a TV Programme BBC Cymru Wales
Location: Wenvoe, Glamorgan
CLIP Cymru: David Parry-Jones reports from the Wenvoe television transmitter
David Williams reports on the launch of Radio Wales
Language: English
David Williams reports on the launch of Radio Wales with Anita Morgan presenting and Chris Morgan reading the news. 09/11/1978 Wales Today BBC Cymru Wales
Location: Cardiff
CLIP Cymru: David Williams reports on the launch of Radio Wales