Renewable energy: Why burn US trees in UK power stations?

Environmentalists are trying to block the expansion of a transatlantic trade bringing American wood to burn in European power stations. The trade is driven by EU rules promoting renewable energy to combat climate change. via Pocket http://www.bbc.co.uk/news/science-environment-22630816#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa