Matt Campbell, whose brother Geoff died in the twin towers, attends Changing Times to present a personal account of his legal action in the UK and US to achieve justice for Geoff, as he believes the evidence overwhelmingly shows that the destruction of the twin towers was caused by explosives and incendiaries.   The talk is preceded by a presentation by Andy Thomas covering a general round up of events around 9/11 and the various related conspiracy theories.   Prior to this lecture, Matt Campbell last attended Changing Times in 2015. His talk from then can be found here