Mr. O’Connell is the author, most recently, of “Notes From an Apocalypse: A Personal Journey to the End of the World and Back.” There is plastic in our bodies; it’s in our lungs and in our bowels and ...
Of all the plastics that surround us on the daily, the one we hear least about in the 3D printing world is probably polypropylene (PP). Given that this tough, slightly flexible thermoplastic has ...
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