The uproar over what critics call "pink slime" in some ground beef refocused attention on what's in the food we eat. Most packaged foods contain at least one item you wouldn't recognize. But many food experts caution that just because you don't know an ingredient doesn't mean you shouldn't eat it.
In advance of the 50th anniversary of the 1964 Republican Convention, Robert Siegel speaks with The New York Times writer-at-large Sam Tanenhaus. They discuss the impact that the Civil Rights Act, passed earlier that year, had on the nomination of Barry Goldwater.
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