Porsche is alone in the world in simply playing the same note over and over for decades on end, and somehow with every successive stroke of the bow, it manages to improve upon perfection.

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She visits the Brain Science Lab at Indiana University, which studies the hard- swimming members of the US Masters: men and women who swim 3, 500-5, 000 metres three to five times a week, sometimes for decades on end.

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Just for one single battle preparations have often to be made for decades on end and the plans deeply laid, and while only some thousands fight in the front line there are behind them millions engaged in various tasks which, though small themselves, contribute directly to the supreme effort.

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We've been spending billions of dollars on school modernization for decades, and I suspect we could keep on doing it until the end of the world, without much in the way of academic results.

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It probably is the Higgs, which represents the end to a search that has gone on for decades to find the missing piece of the Standard Model puzzle.

UNESCO: MEDIA SERVICES