Heeding instructions, Villalobos rolled "under a hot wire to safety, " and the tiger backed off, Breheny said.

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The chemical reaction producing the oxygen is started at one end with either a hot wire and power or a small cap.

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It appeared as if carved out of stone, but in fact was made of vast segments of hot-wire-cut polystyrene with a light beech veneer.

ECONOMIST: Building design