Retail giant claims to be first US firm to comply with looming light bulb efficiency rules
From Fairtrade food to eco-friendly travel, green goods market grows by almost fifth over two years
Retailers score highly for their progress in areas such as sustainable sourcing, while Tesco, Asda and Netto receive the lowest ratings
Retailer says move to transport 300,000 products a week by train will cut annual carbon emissions by 800 tonnes
Shops keeping heating on and doors open are guilty of doubling their energy bills, research finds
Asda seeks corporate partner to roll out waste-cutting detergent dispensing machines
Retailer says it is on course to meet self-imposed target of becoming world's most sustainable major retailer by 2015
European suppliers are increasingly losing out to greener rivals overseas, says Mike Barry, head of sustainable business at Marks and Spencer
This is not just a sustainability strategy, it's an M&S sustainability strategy