On September 11, 2001, hijacked commercial airliners are flown into the World Trade Center in New York, and conspiracy theories begin to circulate almost immediately, according to the reporting. The claims persist over time and continue to be addressed by experts years later.

The sources describe the early emergence and longevity of these narratives rather than focusing on any single new allegation. While the Daily Mail frames the topic as an ongoing challenge for experts to debunk, other reporting on the broader subject typically notes that mainstream investigations and technical analyses have repeatedly concluded that the official account is consistent with available evidence.

Overall, outlets converge on the key point that misinformation surrounding 9/11 emerges rapidly and endures, with expert groups continuing to respond. Differences tend to be in emphasis—how quickly theories spread, and how strongly publications highlight the need for repeated debunking—rather than on whether conspiracy claims exist.