Michael Schneider Variety Editor at LargePBS led all networks in nominations for the 42nd annual News and Documentary Emmy Awards, landing 52 overall — thanks to the strength of signature series “Frontline,” “Independent Lens,” “POV,” “Nova,” “PBS News Hour” and “Nature.”The National Academy of Television Arts and Sciences announced this year’s nominees on Tuesday morning, noting that more than 2,200 submissions were entered, from content that premiered in calendar year 2020.