Brussels, 29/02/2012 (Agence Europe) - The main market instrument for combating climate change, the EU's emissions trading system (ETS), is at a crossroads, with the prospect of reform of its rules for increasing carbon price effectiveness, and a possible trial of strength with third countries that challenge the fact that civil aviation has been included in the ETS since 1 January this year. The day after the ambitious vote by the energy committee at the European Parliament (ITRE committee)...