Gold is the most noble of all known metals – it doesn't react readily with substances like the oxygen that bonds with atoms ...

Prime Minister Narendra Modi has urged Indians to avoid buying gold for a year as oil prices rise and the rupee faces ...

Rust is one of the most common problems affecting metal structures, tools, and construction materials. Over time, exposure to moisture and oxygen leads to corrosion, which weakens metal surfaces and ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. What is rust? – Henry E., age 13, Boston, ...