Jonathan Cole’s second of two webinars this month has been rescheduled to next Wednesday, November 16, as he prepares for Tropical Storm Nicole to reach Florida and faces likely power outages this evening.

In the meantime, if you didn’t see Cole’s presentation last week, we strongly encourage you to check out the 30 minutes where he discusses the North Tower’s “spire.” This refers to the portion of the building’s core that remained standing for about 15 seconds after the rest of the tower was down.

Cole argues that the “spire” is the Achilles’ heel of all gravitational collapse theories. If you don’t know about it, you must watch these 30 minutes!