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I love that math can be touched in this way

and geometry, and physics, and so MUCH more.

3D Printing or serious waste management? Both, of course

3D printing must minimize both the plastic not reused today, AND the one produced tomorrow.

"3d printed food" means 3 VERY different things

At least three, that is. Not equally realistic, or fair.

The concrete dangers of cement

An ugly title for a very serious topic.

Trade wars will boost digital manufacturing. But not at home

Last summer, professor J. Pearce argued that “Trade wars will boost digital manufacturing - at consumers’ own homes with personal 3D printers”. I hope that that 3D printing-enhanced boost happens, but I also believe, and hope, that it will not happen where prof. Pearce says.