Benvenuti, the inventor of the panels, has been working on vacuum technology at CERN since the 1970s.

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Working out why vacuum energy is not so vast has been a problem for physics ever since.

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He spent most of his final 37 years on Cape Breton, working on projects as varied as the vacuum jacket (a forerunner of the iron lung), man-carrying tetrahedral kites and, most famously, the hydrofoil.

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Bhutto said Washington is concerned about a power vacuum in Pakistan and wanted to know whether she would still consider working with Musharraf.

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