Underground NUCLEAR explosions???
Don't you realize that the heat from a nuclear explosion reaches 2 million degrees? If the surface was only 800 (and who the hell was measuring that at that exact instant in time??? and HOW?) then there is a few billion calories that went missing!
Lies! The terrorists were Saudi Arabian extremists who hijacked jets and flew them into the towers, melting the steel superstructure and thereby collapsing them. End of debate. There simply is no other explanation that makes sense - no further explanation is needed unless you are seeking to justify some kind of political agenda (like driving a wedge between the Israelis and the U.S.)
Rem will back me up - Occam's razor is the tool to use to get to the heart of the matter.
CZAR