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Trash-tracking app could help keep Hong Kong waterways clean

Global Alert is billed as an online mapping tool that allows users - particularly hikers and beachgoers - to report, rate and map the locations of rubbish blackspots and alert the community to take swift action. Its main focus would be on floating plastic trash, which is produced on land but tends to accumulate in rivers, lakes and coastlines, said Douglas Woodring, co-founder and managing director of the Ocean Recovery Alliance conservation group which developed the app.

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