When we talk about crystals around here, we’re generally talking about the quartz variety used to make oscillators more stable, or perhaps ruby crystals used to make a laser. We hardly ever talk about ...

Do you remember asking the classic question in high school chemistry class, “When will I ever use this?” I admit that I was one who posed this question loud enough that I was rewarded with an ...

Ever get iron stains on your leather—or worse, spill something like used CLR on your workbench? It might feel like a disaster, but it’s fixable. A simple solution made with 1½ oz (42 g) of pure oxalic ...