The What? And Why? Of Rare Earth Metals
February 09, 2011 at 17:16 PM EST
Over the past few months, there’s been a buzz surrounding rare earth metals. These are metals such as europium, lanthanum, neodymium and 14 others found in small concentrations attached to other metals and resource deposits. They’re actually not that rare, just expensive and difficult to pull out of the ground. These naturally occurring elements are [...]