You might think you are protecting your tools when you tuck them under a deck or lean them against the side of a shed, but that outdoor habit quietly invites rust to spread across every metal surface.

Mateo Jaramillo sees the future of renewable energy in thousands of iron pellets rusting away in a laboratory in Somerville, Massachusetts. Jaramillo is chief executive of Form Energy, a company that ...

Salt and rust — the bane of your car's existence — may be the keys to storing enough renewable energy to power the electric grid for several days. That's according to two local companies that have ...