How old Christmas trees are recycled as flood defences

Once stripped of their tinsel and baubles, most Christmas trees end up in landfill or are ground up as chippings - but a recycling scheme is seeing them put to good use in the natural environment. via Pocket http://www.bbc.co.uk/news/science-environment-30615156#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa