The Massachusetts Institute of Technology graduates had died from poisoning due carbon monoxide in their home, a law enforcement source said on Friday.The couple was using a laser 3D printer that was venting into their residence, CBS San Francisco Bay Area reported.The need to gain height above the ground may have originally been inspired by the weather and street conditions rather than money or vanity.During medieval times, special wooden soles called pattens were attached to the bottoms of fragile, expensive shoes made for wearing indoors so they could be kept out of the mud and damp when converted for outdoor use.
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When used in industry, the machine's use of lasers on certain types of plastics can emit toxic gasses, including carbon monoxide and hydrogen cyanide.
Researchers at the Illinois Institute of Technology warned users against the potential dangers of 3D printers for home use.
Shoe height has historically reflected nobility, authority, and wealth.
France's King Louis XIV (1638-1715) was only 5 ft 3 in (1.6 m) tall until he donned specially-made high-heeled shoes with curved heels constructed of cork and covered with red-dyed leather, with the red color symbolizing nobility.