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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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- Source: CNN
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Saving one of the oldest living creatures on Earth
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Monitoring killer whales with AI
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SIMONS TOWN, SOUTH AFRICA - JUNE 29: African penguins gather at the end of the afternoon at Boulders Beach June 29,2010 in Simon's Town, South Africa. The vulnerable species live in a penguin colony in False Bay that is part of Table Mountain National Park. Since breeding two pairs in 1982, the penguin colony has grown over the years to over 3,000. Tourists in country for the World Cup have brought double the usual numbers of people visiting the famous penguin breeding ground. (Photo by Paula Bronstein/Getty Images)
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The race to save the African penguin
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Call to Earth: Kings of the forest
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The comeback of the humpbacks
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Hope for koalas after bushfires
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<p>Brazilian biologist Fernanda Abra was recognized by the Whitley Fund for Nature for her pioneering work to build and monitor low-cost canopy bridges over Highway BR-174 in the Amazon rainforest, to protect tree-dwelling mammals from road vehicles. </p>
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Building bridges to protect Brazilian primates
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<p>For Call to Earth Day 2024, a day of action to better protect the planet, children shar</p>
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Children from around the world unite to celebrate the planet
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Protecting an odd-looking and endangered ocean predator
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Protecting Hong Kong's marine life
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Call to Earth: Forests of the Deep
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Meet the school children saving Britain's eels
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How Norway’s sheep herders are helping to conserve coastal heathlands
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