NBC TV stations in Los Angeles, Chicago and Philadelphia will begin partnering with nonprofit newsgroups in those cities and others, according to the New York Times. KNBC Los Angeles will work with public radio station KPCC. The Chicago station WMAQ will work with The Chicago Reporter blog and magazine. Philadephia’s station WCAU will work with public radio station WWHY and its NewsWorks, a hyperlocal news site. All 10 NBC’s owned and operated stations will also collaborate with the acclaimed investigative journalism nonprofit organization ProPublica. The partnerships are a byproduct of Comcast’s gaining control of NBC Universal. Toward securing government approval, Comcast promised to beef up local coverage through such partnerships at least five of its stations. The plan was modeled on the San Diego station KNSD and local Web site voiceofsandiego.org. The government put the partnership in writing. Valari Staab, the president of the NBC-owned television stations, said the local stations “looked for what organizations we thought could contribute unique content we couldn’t otherwise have.” In some cases the partnerships will allow stations to cover more news without adding staff more directly, and nonprofit news organizations will receive new outlets for their journalism and potentially recover some costs. NBC is making unspecified donations to each of the partners. The relationships between the stations and the nonprofits will be announced Tuesday. NBC has already moved to shore up is 10 local stations that had undergone financial cuts before Comcast took over — adding newscasts, hiring reporters and replacing TV trucks.