Twitter RT @MailOnline: Freshwater plants turn Colombian river into a ‘liquid rainbow’ http://t.co/MKDtQHcTM8 http://t.co/nIHXjrqtjl

RT @MailOnline: Freshwater plants turn Colombian river into a ‘liquid rainbow’ http://t.co/MKDtQHcTM8 http://t.co/nIHXjrqtjl

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