Business Green: Just days after IntercontinentalExchange (ICE) announced it is to shell out £395m to acquire London-based Climate Exchange, arch rival CME Group stepped up its push into the European carbon market yesterday with the opening of a London office for its Green Exchange subsidiary. The company said it has secured a team of industry veterans to run the new office, appointing Les Male, former commercial director at Anglo-Dutch energy exchange APX-ENDEX, as head of London operations, while …