The world’s most expensive substances command their prices for very different reasons. Some, like rare gemstones, are ...

Usually, what springs to mind when you think of the world’s most expensive substances are gold, silver, and platinum. However, according to a study conducted by the BBC’s ‘Science Focus,’ the reality ...

In recent weeks, you've likely heard a lot about rare-earth substances with hard-to-pronounce names, but experts warn that the shortage of another... In recent weeks, you've likely heard a lot about ...