Professor Chiu Siu-wai, right, affixes a digital monitoring device to a tree at Chinese University's campus in Sha Tin. Photo: Dickson Lee

Digital 'tree guard' gives endangered incense trees a voice

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Professor Chiu Siu-wai, right, affixes a digital monitoring device to a tree at Chinese University's campus in Sha Tin. Photo: Dickson Lee
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Ernest Kao

Ernest Kao

Ernest is a reporter at the SCMP. He mainly covers environment, energy, science and urban planning and development issues.