Sinkhole rain. An analysis of a case of sinkhole formation under a retention pond due to a large amount of rain can be seen in a sinkhole collapse study. Sinkholes have been used for centuries as disposal sites for various forms of waste. A consequence of this is the pollution of groundwater resources, with serious health implications in such areas. The Maya civilization sometimes used sinkholes in the Yucatán Peninsula (known as cenotes) as places to deposit precious items and human sacrifices. When sinkholes are very deep or connected to caves, they may offer challenges for experienced cavers or, when water-filled,
Wall Street and the Financial Crisis: Anatomy of a Financial Collapse Wall Street and the Financial Crisis: Anatomy of a Financial Collapse Wall Street and the Financial Crisis: Anatomy of a Financial Collapse is a report on the financial crisis of 2007–2008 issued on April 13, 2011 by the United States Senate Permanent Subcommittee on Investigations. The 639-page report was issued under the chairmanship of Senators Carl Levin and Tom Coburn, and is colloquially known as the Levin-Coburn Report. After conducting "over 150 interviews and depositions, consulting with dozens of government, academic, and private sector experts" found that "the crisis was not a natural disaster, but the result of high risk,