The Numbers Game: Why this substance costs 84 trillion dollars a gram
Money Matters with Hongbin Jeong and Chua Tian Tian - A podcast by MONEY FM 89.3

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A substance so rare and unstable that just one gram could cost 84 trillion dollars. Known as antimatter, it's the most expensive material on Earth, capable of releasing unimaginable energy and disappearing in an instant.See omnystudio.com/listener for privacy information.