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</html><thumbnail_url>https://dialogue.earth/content/uploads/2020/05/pearl_river_pollution.jpg</thumbnail_url><thumbnail_width>142</thumbnail_width><thumbnail_height>172</thumbnail_height><description>The harmful effects of rapid urbanisation and industrial growth have been felt on the Pearl River delta, writes Tang Hao. While the worst pollution has been controlled in recent years, he argues, prevention is always better than cure.</description></oembed>

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