Medication is a must for many passengers, but not every airline's policies are identical - and people jetting off to sunnier ...

Weird things can happen to the body in space – not least from abrupt changes in gravity as well as weightlessness, radiation ...

NASA astronauts Suni Williams and Butch Wilmore begin their 17-hour return journey to Earth after 9 months aboard the ISS. Follow Newsweek's live blog.