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See a frenzy of sea life where cold and warm water meet off the coast of South Africa in this multimedia feature.
A new fossil find sheds light on how whales evolved. Find out more in this feature.
Find out how scientists and herring fishermen have teamed up to save trapped harbor porpoises in this feature.
Think your photo is the "Ultimate" winner? Submit your best in six different categories.
See how Lipton is dedicated to sustainable agriculture. View pictures from Boyd Matson's trip to Africa.
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