BRUSSELS — Loopholes in the European Union’s new interim climate target increase the danger of missing the 2050 net-zero goal, the bloc’s top scientific advisor warned.  The EU’s 27 governments on Wednesday agreed to reduce their planet-warming emissions by up to 90 percent below 1990 levels by 2040, but riddled the legislation with offsetting options and revision clauses that could significantly weaken the target.  “I see this as a political compromise that at least keeps the 2050 target