Stocks cool ahead of Fed, pound skids on disappointing GDP

By Marc Jones LONDON (Reuters) - World shares shuffled away from all-time highs on Tuesday as surging Chinese stocks took a breather and investors began to retreat to the sidelines ahead of the Federal Reserve's policy meeting. The figures were seen as loaded with significance coming just nine days before an election and its aftermath, when Britain's future cohesion and its membership of the European Union could be potentially at stake. "I think the real risk is so much uncertaint