Prince Frederik, son of Prince Robert of Luxembourg, has died from a rare genetic disease, his father announced. He was 22. Robert and his wife, Princess Julie of Nassau, announced Frederik's ...

Theoretical physics is the development of mathematical formalisms and computational protocols for describing all aspects of objects found in the world around us and their interaction. This can ...

Joly says she rebuked U.S. senators who joked about Canada becoming the 51st state ...