With just a few simple ingredients, you can create a toothpaste that’s effective, eco-friendly, and free of harsh chemicals. In a small bowl, combine the calcium carbonate powder, baking soda ...

It is made mostly of a chemical called calcium phosphate. This is different from the chemical that makes up seashells, which is calcium carbonate. Luckily, sea shells and teeth don’t dissolve in water ...

So, if we have calcium carbonate and we heat it, it breaks down to produce calcium oxide and carbon dioxide. Gethin: OK, I know you're poised with your pen and your flip chart. But, before that ...

The rare wildflowers grow only on soils containing calcium carbonate, which is used in medicines, toothpaste, cement and other products. “This mining withdrawal is a key step in protecting these ...