Foam is practically defined a mass of bubbles held together by some material. The advantages of making something like a super strong foam is that it would be incredibly light while also being able to hold a significant amount of load. In other words, it would have an advantageous weight to loading ratio. Researchers at NYU’s materials lab have created a super strong foam that is made out of small hollow metal particles. The “foam” might not be what you typically think of, but this material could lend itself to many significant engineering applications.