supermarket chain Aldi who are taking a step towards greener stores.They have said that they plan to add doors to all of their fridges and this will use less energy to keep cold food the correct temperature in an effort to save 2,000 tonnes of carbon emissions a year.Following a successful trial, the fridge doors will become a standard experience for shoppers in Scotland.They will reduce each store’s energy consumption by approximately 20 per cent, equivalent to a carbon emissions saving of up