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'A symbol of hope': the endangered cockatoos thriving 2,000 miles from home
Yellow-crested cockatoos were once abundant in the jungles of Indonesia, but the exotic pet trade has pushed them to the brink of extinction. Astrid Andersson, a research scientist who grew up in Hong Kong -- where the cockatoos found an unlikely refuge -- has developed a forensic technique she believes can help save the species.
03:57 - Source: CNN
Call to Earth 16 videos
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'A symbol of hope': the endangered cockatoos thriving 2,000 miles from home
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Conservation comeback: how Angola revived its giant sable antelope population
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