Thousands of years ago, our ancestors discovered something that would clean their bodies and clothes. As the story goes, fat from someone’s meal fell into the leftover ashes of a fire. They were ...

The film details the process of soap making, starting with Carl Mason's laboratory demonstration using fat and sodium hydroxide (lye). It explains the chemical reaction known as saponification, where ...

Heman Bekele spent the last year developing a bar of soap that could treat skin cancer. It was the winning entry at the annual 3M Young Scientist Challenge, considered one of the top science 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]. How does soap clean our bodies? – Charlie H., ...