An impromptu memorial for the Marathon-bombing victims in a Green Line tunnel

Tim Murphy, who normally drives trolleys on the Mattapan Line, was driving a Green Line trolley on Saturday. At 2:49 p.m., he found himself between Hynes and Copley - basically right under the spot where the bombs exploded four years earlier. He reports:

I felt that I needed to say something. So I stopped the train just before the Copley Junction, where the Heath Street trains join the subway, and got on my PA and asked for everyone's attention. This is what I said:

"4 years ago, at this exact time, about 30 feet above this spot, the first of two devices went off and changed our city forever. Before entering Copley I would just like to observe a moment of silence to remember those who were lost and to think of those of us who continue to struggle on a daily basis from the effects of that day. On a more personal note for those running on Monday, from someone who was there in Copley Square when it happened, I can't even begin to tell you just how much it means to us that you continue to support our city. Thank you a thousand times over."

Then the train erupted in applause, something I wasn't expecting, we then observed a moment of silence and proceeded into Copley Station. The rest of that trip I had people in tears coming up and thanking me.

Competition for Josh Zakim could blossom in District 8 council race

Kristen Mobilia, who has long been active in the Fenway Garden Society, which oversees the Fenway Victory Gardens, has filed papers with state elections officials for a possible race against District 8 (Fenway, Back Bay, Beacon Hill, Mission Hill) City Councilor Josh Zakim.

To get on the fall ballot, Mobilia will have to file enough signatures on nominating petitions that the city elections department will release next month.

Mobilia is also director of finance and administration at VideoLink, LLC, a Newton company that creates and manages videos for corporate clients.

Good end to good day in Boston

Rob Littlefield captured tonight's sunset over downtown.

Also watching the sun go down:

New York Times only hurts itself when it tries to speak Boston English

The Grey Lady begins a profile of our Barbara Lynch:

BOSTON - Barbara Lynch never thought she would end up in South Boston.

The chef is a fierce Southie, a local term for this neighborhood and the people who built it.

As Luke O'Neil, who spotted the passage, notes:

That's... not a thing.