Wed, 8 September 2010 16:16:23 BST
Dolphins in Australia are seen collecting large conch shells, an extraordinary rare and innovative behaviour.
What wildlife questions bug you? Get answers from the Earth News team and share your expert knowledge.
John Aitchison films the dramatic sight of migrating snow geese passing through Hudson Bay in Canada.
This week:
As temperatures cool and leaves start to turn here are some classic clips of the early signs of autumn.
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Fancy some fresh air? Breathing Places has 10,000 wildlife events and places to visit nationwide.
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