Surprisingly, the foam wins in this case. The foam I'm talking about was invented by Afsaneh Rabiei at North Carolina State University. It is a metal foam made of hollow steel spheres embedded in a stainless steel grid. It is extremely light, yet super strong and poses to be an alternative to the heavy, and bulkier armor our troops wear today.
While it's great that humans are so inventive that we can surpass so many obstacles with our intellect, its a curious thought that maybe humans could potentially evolve defensive mechanism or even parts, much like how a turtle has a shell and a porcupine has its needles. For instance, humans feet have evolved to become softer and softer since we lack the need for rock hard soles, due to the invention of shoes. Although we are an innovative species, do the inventions such as possible foam armor inhibit our possibility of evolving to naturally enhance our survival?
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