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    Science world awaits major announcement

    Al Jazeera English

    by Al Jazeera English

    Scientists at the CERN research centre in Switzerland are expected to make a major announcement on Tuesday.

    It is thought they have found evidence of a particle that underpins everything we know about how the universe works.

    If confirmed - and it's a big "if" - it would be the most significant breakthrough since scientists discovered the structure of DNA almost 60 years ago.

    Al Jazeera's Nadim Baba explains.