Dr Christian Dunn, one of Wales’s leading campaigners, answers your questions about litter and the environment. Call 03700 100 110. Text 8 10 12. Tweet @bbcradiowales. Show more
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Dr Christian Dunn, one of Wales’s leading campaigners, answers your questions about litter and the environment. Call 03700 100 110. Text 8 10 12. Tweet @bbcradiowales. Show more