As has happened before, some trades had to be cancelled.

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"As it has never happened before, it is something very special, " he said.

CNN: F1 champion Vettel: Red Bull will be slower in 2012

As has happened numerous times before, a member of the audience was distraught over the pain that will be caused when interest rates eventually rise and increase the cost of financing our debt.

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The details may change, but as always: all of this has happened before.

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As yet this has not happened although TfL says there will be changes before the start of the London Olympics in 2012.

BBC: Campaigners vent anger at TfL over cyclist deaths

We do know that when smallpox has been introduced into populations who have not encountered the virus before, such as what happened during the colonization of the U.S., that smallpox had a much higher fatality rate, certainly exceeding 50 percent.

CNN: Dr. William Hall: Medical impact of bioterrorism

This had never occurred to me before, and my cheeks burned with frustration as I realized that this has already happened to me.

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The reason this has happened is the station was originally designed for the lower Eurostar service but, as I've reported before, that service won't stop there during the Games.

BBC: Stratford platforms raised to host Javelin trains