Page last updated at 07:47 GMT, Wednesday, 18 April 2012 08:47 UK

Antarctica penguins affected by global warming

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Rising temperatures in Antarctica are having an impact on the continent's many colonies of penguins - some are flourishing while others have undergone a significant population fall.

Fast Track's Karen Bowerman asks what the changes in penguin population could mean for the rest of us in the event of climate change.

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