However, the IAAF has previously said that if the Picketts Lock project did fall through, it would not allow UK Athletics to simply change the venue to another city.

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Robin Lock is curator of the Eden project, a recreation of a rainforest in the West of England and has worked in rain forests around the world.

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"To lock ourselves into this 25-year project could be very expensive and environmentally very damaging, " added Mr Horwood.

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In Manchester, the X-Calibre project helped police identify the most important gang leaders and lock them up.

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