If you think Valyrian steel swords from Game of Thrones require one of the most dangerous and difficult bladesmithing processes ever, with all of that dragonfire and spellcasting and whatnot, you’re ...

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To make a safe, portable form of heating to take to the rest of the team working up on the glacier. All combustion reactions (such as the burning of coal) are exothermic. Incredibly, the reaction ...