Out of service

Amtrak, the Acela corridor, N95 masks, a lot of unsubscribes, and 7 other things worth your time.

A lot of things are on the brink right now. Amtrak might be one of them.

Last week, ridership of the Acela, the comparatively high-speed train that runs from Boston through New York to Washington, was at just 1 percent.

As of Sunday, it’s shut down. Not a surprise.

Actually, what is surprising is that some non-Acela trains are in fact still running, as I’m…