In an innovative move towards sustainability, retailer Marks & Spencer has announced a $1.3 million investment in a dietary program for dairy cows. This initiative aims to significantly reduce methane production - a potent greenhouse gas - through changes in cow feed. By implementing this diet plan, M&S expects to achieve an 8.5% reduction in its fresh milk carbon footprint, marking a positive step towards environmental responsibility and the promotion of sustainable farming practices within the dairy industry.