The Twin Towers were contaminated with Asbestos. When the towers went down, all that crap went up into the atmosphere.
Also, nothing was ever publicized about the QRS-11 flight Interrupter chip which was installed in all commercial aircraft in the 1990s so that if a plane was hijacked, the pilot controls could be overridden and the plane landed safely.
The QRS-11 chip was patented by the Rose Law Firm of Little Rock. This was Hillary Clinton's law firm. ;)