Scientists say they believe they have captured the elusive Higgs Boson particle that gives matter mass.
Professor John Womersley, chief executive of the Science and Technology Facilities Council, told reporters at a London briefing that they had discovered a particle consistent with the Higgs Boson.
Discovery is the important word. That is confirmed. It's a momentous day for science.
There is a strong Welsh connection to the groundbreaking scientific project as Dr Lyn Evans from Aberdare was the project leader.
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Six companies have announced jobs in the financial and manufacturing sectors, on the eve of the UK Investment Summit.
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Tooth extractions among 5 to 9-year-olds increased last year, according to figures obtained by ITV Cymru Wales.