Use BBC.com or the new BBC App to listen to BBC podcasts, Radio 4 and the World Service outside the UK.
Russian astronaut Vasily Tsibliyev hadn’t had a good night’s sleep for 12 days. He was being kept awake on purpose, as part of a study about sleeping on board the space station Mir. On the 13th day, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results