I think the truth gets hidden in lies, staunch skeptics and some conspiracy sites are used to hide the truth.
My dad left work early on 17 may 1974. He had done Uk national service in 1960. At about 4.45pm walked past a bunch of men in parnell street that were speaking in "sandhurst accents with british military jargon. 45 minutes later a bomb went off in the same spot. Future inquires said the bombing used "unusually sophisticated explosive", what this explosive is, is impossible to find though it should be public domain, it wasn't aluminum nitrate [fertilizer bombs aren't sophisticated]. The truth site about the bombing even has a fake UK intelligence document about UVF sympathizers in the british army. The wikipedia page is changed and edited repeatedly, links get made and broken, info is put up and then disappears. It isn't the info is wrong, it is just suggestive of uk secret service involvement. For note I look at this period of history as a historian would, to find the truth, I am not bothered about the politics of the present in the slightest. I just like sifting the copraphites of bias. I also think it useful to know what lengths some would go to prolong and provoke a conflict that benefits them. Look up why Litvinenko was murdered, or building 7. I read a blog [which I cant find now] written in the days after 7/7. It was just alot of people speaking about what they when through. Two respondants were direct witnesses that saw bombs go off. Both got visits off the police in following days that rather than asking them what they saw, told them what they saw.
Aircraft exhaust isn't just water vapour, it changes climate
http://www.sciencedaily.com/releases/2004/04/040428061056.htm
And it contains toxic particulates, barium is used in smoke suppressants and this comes out in the exhaust. [source gas turbine combustion by AH lefebvre] sluminium oxide is also produced. Private eye had an article on cabin crew having organo-phosphate poisoning a few months back.
UNESCO was set up by julian huxley who was also a eugenicist and supported the idea of population reduction. There was plot to over throw the Us government during the 1930's the desendants who was behind it, were also behind the present world economic problem.