Several people have been injured after a train came off the tracks near the Swiss village of Tiefencastel, around 30 miles from the ski resort of St Moritz.
The Swiss air rescue service Rega said it had two helicopters at the scene.
More top news
The move could reduce spina bifida and other neural tube problems.
Michael Buble has announced plans to "retire" from music after admitting he no longer has the desire for fame after his son's cancer battle.
Brexit negotiations failed to reach an agreement at the weekend because the EU is seeking a "backstop to the backstop".