Or, you know. Several thousand tons of steel, stone, and glass falling 100 stories to the earth won't produce the same effect.
Its obvious you have never seen any of the aftershots of the tower's rubble. Also don't you think if a nuke went off, there would be radiation?
He's talking about thermo-nuclear demolition, which is real but it doesn't have the same effects as an actual nuclear bomb.
Anyway, this 'thermo-nuclear demolition' never happened. One of the towers begins to fall on itself from the middle, if a nuclear demolition would've happened the tower would've collapsed on itself from the bottom. There was also an explosion in the middle of one of the towers from the fuel and fire which caused it to fall and weaken the other tower.
The proof of this being an actual thermo-nuclear demolition is almost 1 to none.
Edit: and 1 being that they found chemicals around the site, which could've been from anywhere like the tower itself or the airplanes.