Madoff investment scandal to enable the Irish regulator to uncover the fraud much earlier than late 2008 when he was finally arrested in New York. The scheme began to unravel in the fall of 2008, when the general market downturn accelerated. Madoff had previously come close to collapse in the second half of 2005 after Bayou Group, a group of hedge funds, was exposed as a Ponzi scheme that used a bogus accounting firm to misrepresent its performance. By November, investors had requested $105 million in redemptions, though Madoff's Chase account only had $13 million. Madoff only survived by moving money from his
European Union Emission Trading Scheme allowances to the authorities to cover their emissions. If emission exceeds what is permitted by its allowances, an installation must purchase allowances from others. Conversely, if an installation has performed well at reducing its emissions, it can sell its leftover credits. This allows the system to find the most cost-effective ways of reducing emissions without significant government intervention. The scheme has been divided into a number of "trading periods". The first ETS trading period lasted three years, from January 2005 to December 2007. The second trading period ran from January 2008 until December 2012, coinciding with the first commitment period