New York (CNN Business) More than 250 news outlets around the world have committed to Covering Climate Now.

What is it? An initiative to provide focused coverage of the climate crisis in print, on air and online.

Participating news outlets are running stories in the run-up to the UN Climate Action Summit on September 23. The organizers hope to keep it going well past this month.

One of the goals is to get people in newsrooms "to start thinking" about how to cover the subject in a sustained way, veteran journalist Kyle Pope said on this week's "Reliable Sources" podcast.

Pope is the editor and publisher of the Columbia Journalism Review, which spearheaded the initiative along with Mark Hertsgaard of The Nation magazine earlier this year. The Guardian came on board right away, and other newsrooms have been signing on ever since.

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