Old jeans could shield your home from the next heatwave

We all have that one pair of old jeans in the back of our wardrobe – don’t throw them out! A French company says denim fibres make for great insulation against the cold and heat. Millions of jeans are already being recycled in a factory in north of the country. Their insulating panels have even found their way into some of France's most iconic buildings. Our Down to Earth team reports.