Greeley Park in Nashua will be the kickoff site on Tuesday, July 31, for a five-day anti-global-warming march that hopes to snag some of the 472 (by last count) presidential hopefuls wandering the state. (A similar event is taking place is Iowa.)

Called the March to ReEnergize, organized by college students, it involves five days of public walking designed to raise consciousness, as activitsts like to say, and galvanize legislators. The state’s best-known nonagerian activist, Granny D, will be among what organizers hope will be thousands of participants.

"We’ll make the loudest call to our leaders yet: we want clean energy, green jobs, and a strong economy to cut our carbon emissions 80% by 2050," says the statement.

I’m usually not a big fan of these sort of events; to my mind they they smack of "I brought attention to the problem - now you have to fix it!" But taming greenhouse-gas emissions is such a huge problem that we have to try all avenues, including the publicity-laden.