Original air date: 11 February 2009
Above is an timeline of what happens in the programme
A few images from the emotional sequence around 34′ into the programme are appropriate here
“If future melts are as extreme as this one, bears like these may starve or drown, lost at sea. This is one of the last pieces of ice now adrift in the open ocean. The polar bear’s icy world has melted away” — Attenborough’s words with these poignant images (33’50-34’20).