While the periodic table may depict rare earth metals in one of the two additional rows thrown in at the very bottom, almost as an ad-hoc afterthought, these elements shouldn't be overlooked. They play significant roles in many large disparate industries and geopolitics alike.
Magnets are perhaps the best-known application for rare earth elements (REEs). Permanent magnets made from alloys of REEs with transition metals and boron enable commercial production of the strongest permanent magnets known today. Stronger magnets allow for smaller, lighter replacements of traditional ferrite-based and alnico magnets. From computer hard drives to neomagnet building set toys to open MRI scanners, rare earth magnets are finding their way in to products all around us both large and small.