The president of the Minneapolis Federal Reserve, Navayana Kocherlakota, recently published a paper in which he argues that government guarantees helped fuel the bubble in real estate. While his paper was largely aimed at prescribing solutions to this problem, it raises the question: What other bubbles are lurking out there in the global economy? We asked several experts and to our surprise, they had a long list: 1. Gold: The price of gold bullion has risen from $294 an ounce in 1998 to $1,404 last week, an increase of 377%. "It's the biggest, baddest bubble of them all," says Robert Wiedemer, author of Aftershock: Protect Yourself and Profit in the Next Global Financial Meltdown. Gold has no intrinsic value. A telltale indicator that gold is a bubble: incessant cocktail party chatter about buying gold and endless TV commercials offering to buy gold jewelry. The SPDR Gold Trust ( GLD) ETF is up 28% since the beginning of the year.
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