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Japanese researchers have discovered enough reserves of rare-earth metals (REMs) to satisfy global demand for up to 700 years. Oceanographers surveyed deep-sea mud on Pacific Ocean floor near Japan's Ogasawara Islands, which are about 2,000 kilometers southeast of Tokyo. Scientists say minerals find, "has potential to supply these metals on semi-infinite basis to world". Researchers from Waseda University and University of Tokyo estimate area they mapped contains more than 16 million tons of rare-earth metals. They added that area offers "great potential as ore deposits for some of most critically important elements in modern society".

rare-earth metal is one of set of seventeen chemical elements in periodic table. They have what many of us would consider to be relatively unknown names, like europium, promethium scandium and terbium. uses, applications, and demand of rare-earth elements have greatly increased with our reliance on high-tech products. They are widely used in production of electric motors for hybrid vehicles, wind turbines, hard disc drives, portable electronics, microphones, speakers and whole array of other products. Around 90 per cent of world's supply of REMs used to manufacture advanced electronics currently comes from China. The discovery near Japan could bring down prices.

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