Nano-brick packaging allows foods to last longer

Nano-brick packaging allows foods to last longer: "We've already heard about new types of packaging that use things such as sorbic acid and silver nanoparticles to keep food fresh for longer, but this week scientists from Texas A&M University announced the development of a 'nano-brick' film that utilizes yet another substance to achieve the same purpose. That substance is montmorillonite clay, which is one of the ingredients used to make bricks. The film is about 70 percent clay (with the rest of it made from various polymer materials) and when its structure is viewed through an electron microscope, it actually even looks like bricks and mortar."