Although Mr Smutny denied the cable's contents, OHB's board decided to remove him from his post to prevent any further damage to the company's reputation and the Galileo project.

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There are essentially two methods to remove carbon from fuel: post-combustion and pre-combustion.

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And he strongly criticised Prime Minister David Cameron's decision to remove transport secretary Justine Greening from her post, which he claimed was a prelude to a U-turn on a third runway.

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