12. The Fall of the Twin Towers (2001)
On September 11, 2001, the World Trade Center towers in New York City were struck by two hijacked airplanes. The south tower collapsed at 9:50 a.m., followed by the north tower at 10:29 a.m. These events were broadcast live, leaving indelible images that became etched into collective memory and driving massive changes in global security. Timeline of events.
