An alternative to the planned opening ceremony at the Paris Olympics has begun to take shape if security concerns rule out an extravaganza on the River Seine. The original plan is to hold the ceremony outside a stadium for the first time in Games history. On July 26, around 160 boats are set to take the several thousand athletes on a 6-kilometre route along the Seine. But Le Parisien newspaper, citing senior figures among the organizing committee, reported on Thursday that a scaled-down version has been drawn up in case the full programme with over 300,000 spectators is deemed too risky. Plan …