For more of this incredible footage please watch 'The Polar Bear Family & Me' - Mon 7 Jan 2013 21:30 BBC Two. This is the terrifying moment a wildlife cameraman comes face-to-face?
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Tony Hall's 100th day as director-general of the BBC comes amid a spat over severance payments and criticism of its handling of the Jimmy Savile scandal. Media editor Andrew Edgecl?
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