The most efficient foam in the known Universe.
The findings are reported in Nature.
http://www.nature.com/nature/journal/vaop/ncurrent/full/nature21075.html
"Potential applications for this ultralight material are likely to emerge in aerospace structures, for lightweighting automobiles and in many robotic machines, especially mobile types that carry their own power and must manoeuvre."
http://www.sciencealert.com/this-new-metamaterial-is-the-first-to-reach-the-theoretical-limits-of-stiffness