• Josh Brolin narrates the crazily ambitious “Mankind: The Story of All of Us,” a 12-part miniseries covering the entire history of the human race. Sounds like a laborious homework assignment to us. 10 p.m., History.
• We’ve learned our lesson: Never watch “Parenthood” without a box of industrial-strength tissues at hand. Tonight’s episode finds Adam and Kristina (Peter Krause, Monica Potter) trying to juggle the demands of daily life with her breast-cancer treatment. 9:01 p.m., NBC.
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