Latest Articles— Page 21
The Gravity Maze: How Roots Know Which Way is Down
Plants have tiny 'weight' sensors in their roots. Even if you turn a plant sideways, the roots will quickly turn and head back down toward the center of the Earth!
The Tree's Diary: Reading Annual Rings
One dark ring and one light ring together make one year. Wide rings mean the tree was happy and grew a lot. Narrow rings mean it was a tough, dry year.
Molecular Gastronomy: Making Fruit Juice Caviar
Sodium Alginate and Calcium react instantly to form a thin gel skin that traps liquid inside! That's why the juice bubble pops in your mouth — pure edible chemistry at work.
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!
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.