Britain's Antarctic base Halley VI to shut over ice crack concerns

A British research base in Antarctica is being shut down for eight months because it is perched on an ice shelf which is cracking. The British Antarctic Survey (BAS) is withdrawing all staff from its space-age Halley VI base from March to November. BAS says a new crack in the floating Brunt ice shelf presents "a complex glaciological picture" and scientists are unable to predict what will happen during the Antarctic winter.