BARCELONA: Spain's railway system was under scrutiny on Wednesday (Jan 21) after a commuter service crashed near Barcelona, days after at least 43 people were killed in a collision between two high-speed trains. A train driver died and 37 people were injured - several seriously - in the latest incident late on Tuesday. The commuter train hit a retaining wall that fell onto the tracks in Gelida near Barcelona, regional officials said. Railway operator Adif said the wall likely collapsed due to