I have discovered YouTube and have been watching video of the World Trade center coming down.

It is obvious from eye witness accounts that there were multiple explosions in the Trade Center besides the planes that crashed into the towers. I can not find government explanations of these explosions.

The official explanation for why the towers collapsed is that fire and structural damage from the crashing plane caused one floor to collapse, and each floor collapsed under the weight of the first. But the towers collapsed at the speed of gravity, they fell completely in 8.4 seconds according to seismic data.

These facts contradict the official government response, and lead one to believe that a controlled explosion brought down the towers. And what about WTC Building 7 which only had a small fire and no structural damage from any impact, it collapsed exactly like a controlled demolition with explosives. The government should investigate and adequately answer these questions.

Here's an empirical analysis by Steven E. Jones Department of Physics and Astronomy Brigham Young University.
Another analysis by Morgan Reynolds, Ph.D. Texas A&M University

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This video provides a good summary of conflicting evidence, regarding the official explination of 911.

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This video shows eyewitness acounts of the explosions.

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The Strange Collapse of Building 7

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The World Trade Center, destroyed by Controlled Demolition