Is the first MSM recognition of explosions since the initial reports on 9/11 itself?

http://news.uk.msn.com/world/new-theory-on-twin-towers-collapse

Explosions triggered by molten aircraft metal reacting with water from sprinkler systems may have felled the Twin Towers after the 9/11 attacks, according to a new theory.

Just before the two World Trade Centre skyscrapers in New York collapsed on September 11 2001, powerful blasts were heard within the buildings and a leading materials scientist says they could be the key to the dramatic conclusion of the terrorist attacks.

Over-heated steel beams have been blamed for the towers suddenly crashing to the ground after they were hit by two passenger jets.

But Norwegian expert Dr Christian Simensen believes the powerful explosions were caused by a chemical reaction between molten aluminium from the aircraft and water ripped out the buildings' internal structure.

Thoughts?

Source: http://www.jconline.com/apps/pbcs.dll/article?AID=/20070613/NEWS0501/706130332

Video shows aftermath of 9/11 collapses

June 13, 2007

Purdue faculty members have created a scientific animation of the 9/11 attack on the World Trade Center that shows what happened to the towers after planes crashed into them. The project was funded in part by the National Science Foundation.

WHAT IT SHOWS

The animation shows how a plane went through several stories of the north tower and the effect the plane's body and fuel had on the structure as well as the effects of glass, dust and other factors in the destruction of the tower.

The simulation found that the planes peeled away shortly after impact and the engines flew through the building like bullets.

WHAT WAS FOUND

Confirming another simulation, the Purdue model showed that it was the 10,000 gallons of fuel that caused the most damage, knocking out essential structural columns and removing fireproof insulation.