Last updated at 09:22
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Pictures: New Antarctic research station

Photos of the British Antarctic Survey's new research station, Halley VI, built on Antarctica's Brunt Ice Shelf.
The new station replaces the 20-year-old Halley V and is the sixth to be built on Antarctica's Brunt Ice Shelf.
Halley VI research station and tractors
It will be the new home for scientists researching the Earth's atmosphere and magnetic field.
Halley VI research station aerial array
This ship, the James Clark Ross, picked up Kirk and the Halley VI builders after five months on the frozen continent.
Ship
The British Antarctic Survey's new research station, Halley VI, becomes fully operational this month. Documentary-maker, Kirk Watson, who's based in Scotland, photographed the station being built.
Kirk Watson and Halley VI
Kirk plans to return to Antarctica next year when wounded military personnel will attempt to set three new world records.
Halley VI research station and aurora
The station cost £25.8 million to build and has been designed to stand up to extreme winter weather. It has a gym, research labs and a doctor's surgery - it has even got a pool table.
Halley VI research station aerial view