Latest Articles— Page 19
Food
Eating Metal? Extracting Iron from Your Cereal
Many cereals contain actual tiny bits of metallic iron powder. By crushing the cereal and using a strong magnet, we can pull these iron particles out and see them with our own eyes!
Living Things
Balloon Lungs: How Do We Breathe?
Your lungs have no muscles of their own — the diaphragm does all the work! This dome-shaped muscle pulls down to suck air in and springs up to push it out.