By Mark Kinver Environment reporter, BBC News

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Photo: A drop in demand under an energy savings initiative could save $12 billion in infrastructure costs. (Mick Tsikas: Reuters)

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By David Shukman Science editor, BBC News

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A new UK facility aimed at improving measurement of carbon emissions and boosting development of clean technology is due to open.

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"We know that the very fragile international economic situation is making it difficult for them. Why hit them with a carbon tax now?"

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