by Jean Arce and Daniel Rook Agence France Presse MEXICO City, Mexico (AFP) — An elevated metro line collapsed in the Mexican capital on Monday, leaving at least 20 people dead and dozens injured as a passing train came crashing down, authorities said. Security camera footage broadcast by local media showed the carriages plunging towards the ground in the south of the city. “So far we have 15 people who unfortunately lost their lives,” […]