While other metals are more efficient in some of these applications, rubidium is the 16th most common element in the Earth’s crust, and this abundance may drive more extraction and lower prices.

Heavy metals normally occur in nature and are essential to life but can become toxic through accumulation in organisms. Arsenic, cadmium, chromium, copper, nickel, lead and mercury are the most common ...

Metals are the only substances that are magnetic. But some metals are magnetic and some are not. The most common magnetic metal is iron. You don't see too many objects made of pure iron but you do see ...