david attenborough's extraordinary career expands almost six decades.nd now uncharacteristically, he is speaking out about the dangers of climate change. nearing the end of a bbc series on the frozen plant he has warned that the speed of change in the polar regions has implications for us all. >> the antarctic continent is smothered by the world's greatest ice sheet. >> they're the remotest, coldert parts of the pilot, the polar regions and after filming there a number of years a giant of natural history broadcasting, david attenborough, is convinced that they're changing dramatically. >> this penguin is nesting of all penguins. and like the polar bear in the north, their lives are dependent on the sea ice. >> his big concern is the effect of rising temperatures. here a huge iceberg breaks away from greenland. this does happen naturally, but the melting could accelerate if the arctic and part of antarctica continue to warm up. >> it's not like that there. >> when i met david attenborough for an interview, he explained that it was the speed of change tha

david attenborough's career spans six decades and now he's speaking out about the dangers of climate change. he has warned that the speed of change in the polar regions has implications for us all. >> the and arctic continental is smothered by the world's greatest ice shelf. >> they are the most remote and cold parts of the planet, the polar regions. after filming there over a number of years, david attenborough is convinced that they are changing dramatically. and >> this penguin is the most southerly nesting of all penguins. unlike -- and like the polar bear in the north, their life is dependent on sea life. >> here, a huge iceberg breaks away from green land. this does happen naturally but the mounting could accelerate if the arctic and part of antarctica continue to melt. when i met david attenborough, he said it was the speed of change that is where some. >> this change is happening extremely swift. we have seen this happening and this is in geological terms, in ecological terms, biological, this is huge. to adapt, you can adapt to a slow change. quick changes much more difficul

after 23i78ing there over a number of years, a giant of natural history broadcasting, david attenboroughhanging dramatically. >> this penguin is the most solitary nesting of all penguins and like the polar bear up in the north their dives -- liveds are dependent on the sea ice. >> his big concern is the effect of rising temperatures. here a huge iceberg breaks way from greenland. this does happen naturally, but the melting could accelerate if the arctic and part of antarctica continue to worm up. >> it's not like that -- >> when i met him for an interview, he explained that it was the speed of change that was the most striking and worrying. >> this exchange extremely swift. this change is happening within our lifetime and we've seen it happening and that is in geological terms, in biological and ecological terms, that's hugely swift. so to adapt, you can adepth to slow change. quick change is much more difficult. >> one of the great features of the antarctic coast, the wilkins ice shelf, is seen break up. the film crew filmed huge figure skatingures -- huge fissures running throw it. >>