did-you-kno: Barns are red because of mold. 18th- century American farmers prevented mold growth by covering their barns with a mixture of milk, lime, iron, and rust, which turned the wood red. Once mass-produced paint became available, red was
did-you-kno: Barns are red because of mold. 18th- century American farmers prevented mold growth by covering their barns with a mixture of milk, lime, iron, and rust, which turned the wood red. Once mass-produced paint became available, red was
