In many parts of the world, including Africa, seashells served as a widely accepted form of currency for centuries, especially as the barter system proved insufficient for more complex economies.

Chalk and seashells are made of the same stuff. So why is one crumbly and the other tough? If you know that seashells are made of basically the same stuff as chalk, you might have wondered why chalk ...

Seashells offer low-carbon concrete breakthrough in new study. It’s a simple idea with real potential to reshape part of the sector. Discarded seashells, typically treated as waste, can be transformed ...