At least 26 people were killed and more than 85 injured when two trains collided in northern Greece, the Greek Fire Service said Wednesday. Images on Greece’s state-owned public broadcaster ERT showed smoke pouring out of toppled train cars and long lines of rescue vehicles next to them. The images also showed rescue workers with torches searching carriages for survivors. Greek Fire Service spokesman Vassilis Varthakogiannis said in a televised briefing that a passenger train carrying more than 350 people had collided with a freight train on Tuesday evening, shortly before midnight local time, in the area of Tempi, central...