Herald: Scots are being urged to be less wasteful after it was revealed that the average household throws away £410 worth of food every year. The government wants the public to manage its supply of food more carefully, with better planning of meals, smaller portion sizes and the use of leftovers all highlighted as ways to stop uneaten groceries heading for the bin. The environmental costs of food waste have also been counted in Scotland. Discarded food generally heads to a landfill …