In every life, there are pivotal moments. This week, the US and the world commemorated the 25th anniversary of the events of September 11, 2001.

I was only a mile and a half away from the World Trade Center, up Fifth Ave. I could see much of it straight down the Ave — and worse, could hear the entire city scream when the towers came down. That sound will remain in my bones until I breathe no more.

Today, in my small way, I honor the people whose lives were lost during the event, the first responders who waded in to a nightmare, and all the people whose health was made more fragile by the air in those first weeks. I don’t have it in me to play live today, but have instead assembled a program from the RadioSpiral library.