Jennifer Aniston has faced bizarre rumors over the years - from secret affairs to strange beauty rituals. Some are true, ...

From ancient Babylon to modern bathrooms, soap has shaped human hygiene for over 5,000 years. But how does it really work?

Soap, a complex molecule, is both water-loving and water-fearing. Shaped like a tadpole, the soap molecule has a round head ...

Soap, a complex molecule, is both water-loving and water-fearing. Shaped like a tadpole, the soap molecule has a round head and long tail; the head is hydrophilic, and the tail is hydrophobic. This ...

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 ...