Thrift stores are full of metal pieces that look expensive but are priced like afterthoughts, from tarnished trays to tangled chains. The catch is that modern manufacturing has made it harder to tell ...

Metals are the only substances that are magnetic. But some metals are magnetic and some are not. The most common magnetic metal is iron. You don't see too many objects made of pure iron but you do see ...

It's not surprising that the powertrains of electric cars differ quite a bit from traditional internal-combustion engines. Although they have fewer moving parts, the rare-earth magnets that help power ...

In a hard-to-reach area, it can be frustrating to place a nut properly when you need to thread on a bolt from the other side.