インテルのインスタグラム(intel) - 7月12日 00時04分

Why are barns red? Mold was a big, barn-rotting problem for farmers. But luckily mold’s natural killer, rust, is abundant on farms. Farmers began adding ferrous oxide (rusted iron) to linseed oil. The mixture protected the wood and gave barns that signature red hue. #sciencesnap #didyouknow

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