A new Government report on 'coexistence' designed to examine whether GM crops can be grown without contaminating non-GM and organic crops has failed to answer this crucial question. The report published today (Tuesday) by the Agriculture and Environment Biotechnology Commission (AEBC) also looks at who should foot the bill if something goes wrong. 'GM Crops? Coexistence and Liability ' is the Government's final piece of evidence in helping decide whether or not GM crops are to be grown commercially in the UK.