It’s been busier than in the past few years.

Perhaps we are going to have to think about this again. I know this administration wants to see more. But how we’re going to get them is difficult to say because they’re so expensive. The...

That’s the standard for that.

One area will have a spate of chimneys that topple, and another won’t. Why one area resonates and another doesn’t is complicated.

Some of the harmonics of seismic events will reveal some surprising results.