(August 21, 2008)--Government investigators have issued a report refuting conspiracy theories that explosives brought down a skyscraper next to the twin towers on 9/11.
The report says that fires destroyed World Trade Center 7 on Sept. 11, 2001.
Scientists with the National Institute of Standards and Technology say their three-year investigation of the collapse of the 47-story building was the first known instance of fire causing the total failure of a skyscraper.
The investigators also concluded that the collapse of the nearby twin towers broke the city water main, leaving the sprinkler system in WTC 7 without water.
The collapse of building 7 has long been the subject of conspiracy theories that something else brought down the tower.
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