WNET confirmed yesterday that Alison Stewart, former cohost of NPR’s Bryant Park Project, and Jon Meacham, editor of Newsweek, will be co-hosts of Need to Know, the new PBS newsmag that begins May 7. The program will fill 60 of the 90 minutes that PBS has allotted to Bill Moyers’ Journal and Now on Friday evenings. Politically progressive fans of the two retiring shows flooded the in-box of PBS ombudsman Michael Getler with most of the past week’s 3,000 e-mails, Getler wrote yesterday. The e-mails seemed to be prompted, Getler said, by an alert from the liberal press watchdog FAIR tarring Meacham as “a consummate purveyor of middle-of-the-road conventional wisdom with a conservative slant,” judged unlikely to do the “hard-hitting” journalism of Now and Moyers. See Current‘s March 22 issue for more.