Over time, as iron, steel, and other ferrous metals are exposed to oxygen and moisture they can undergo oxidation, a chemical reaction that eats away at the metal and rust your tools. Left long enough ...

Dr. Elizabeth Yuko is a bioethicist and adjunct professor of ethics at Fordham University. She has written for The New York Times, The Washington Post, The Atlantic, Rolling Stone, CNN & Playboy.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? If you love tools, you’ve probably experienced the odd, magnetic power that old, ...