What is the most appropriate LCA method for measuring greenhouse gas emissions from bioenergy?

Life cycle assessment (LCA) has become a vital tool in determining the sustainability of bioenergy. Matthew Aylott, Adrian Higson, Geraint Evans, Alison Hamer - from the UK's National Non-Food Crops Centre - and Nigel Mortimer - North Energy Associates - explain how the assumptions we make and the method by which emissions are allocated in LCAs can have serious impacts on the conclusions we come to; conclusions which will shape the growth of the bioenergy sector. (C) 2011 Society of Chemical Industry and John Wiley & Sons, Ltd