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[–] leshake 0 points 6 points (+6|-0) ago 

"Boeing describes the new microlattice as an "open cellular polymer structure."

That's not a metal, it's a polymer. Furthermore it sounds like aerogel, which was invented in 1931.

https://en.wikipedia.org/wiki/Aerogel

That picture is probably inaccurate as well.

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[–] Ilikebordercollies [S] 0 points 1 point (+1|-0) ago 

aircraft made from metal foam sound slightly frightening