<p>Coral reefs around the world are experiencing a mass bleaching event as the climate crisis drives record-breaking ocean heat. CNN's Rosemary Church looks at how people are using technology to help.</p>
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A.I. powered robot examines Australia's great barrier reef
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Coral reefs around the world are experiencing a mass bleaching event as the climate crisis drives record-breaking ocean heat. CNN's Rosemary Church looks at how people are using technology to help.

02:50 - Source: CNN
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<p>Coral reefs around the world are experiencing a mass bleaching event as the climate crisis drives record-breaking ocean heat. CNN's Rosemary Church looks at how people are using technology to help.</p>
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