Sainsbury’s, the UK grocery retailer, has announced what it claims is a UK first, with the launch of a new line of laundry detergents in cartons, replacing its existing 750ml plastic bottles. The supermarket chain said the switch from plastic to cardboard would halve carbon emissions associated with the range, as well as taking 13 lorries off the road and saving around 22 tonnes of plastic annually. The laundry liquid has also …