The death toll from the collision of two high-speed trains in Spain has risen. Authorities have so far reported at least 68 deaths. After the country's second fatal rail accident this year, rescue workers are searching the wreckage for more bodies.Hundreds of ambulances, body transport vehicles, and helicopters have been stationed beside one of the trains at the accident site. Several carriages of the train remain on the elevated railway. Meanwhile, scattered along the embankment below the track...