All it takes is a bit of oxalic acid to dramatically transform the wood's appearance from drab and dated to light and fresh.

Whether you’re dealing with a stained tabletop or stained paneling, it’s often possible to apply oxalic acid to reverse the chemical reaction that caused wood to darken. But in your case ...

Researchers from the University of New Mexico found that gadolinium – a toxic rare earth metal used in MRI scans – could mix with oxalic acid found in many foods to precipitate tiny ...