Scott Kelly: 'I could spend another year in space'

Astronaut Scott Kelly says he could spend another year in space - despite the "harsh" conditions - as he comes to the end of his 340-day mission.

Giving his final press conference from the International Space Station (ISS), he compared it to being "in the woods camping for a year" because of the lack of running water and cramped living quarters.

Kelly also praised Russian cosmonaut Valeri Polyakov - who has the record for the longest human spaceflight, staying more than 14 months aboard the Mir space station.