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What is rust? A materials scientist explains metal’s crusty enemy

By Guangwen Zhou, Professor of Mechanical Engineering, Binghamton University, State University of New York

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 CuriousKidsUS@theconversation.com.

What is rust? – Henry E., age 13, Boston, Massachusetts

Imagine leaving your shiny metal bicycle outside in the rain. As water pools on its surfaces, oxygen from the air lingers nearby, and together they…

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