The report says more efficient farming methods ensure that more food reaches markets.still,Colin Brown says millions tons of food are thrown away because it is past its sell-by date or for other reasons.He says a lot of food is thrown away because it no longer looks good,and not because it is no longer good to eat.A spokesman for a group that represents supermarket in Britain says the big food stores are not to blame.He says they are only following European union marketing rules.