A historic collaboration between rival tech giants Apple and Google is developing a means by which smartphones will allow us to receive anonymous notifications when we've been exposed to people infected with the coronavirus. Charities are struggling to help record numbers of Americans who are out of work during the pandemic, adding to the millions who already experience food insecurity. The drive-thru, that symbol of American fast-food-style efficiency, is now the means by which many are being tested for the novel coronavirus. A new TV series dramatizes the political conflict pitting proponents of equal rights for women against Phyllis Schlafly, the conservative lawyer who in the 1970s founded the STOP ERA campaign. And the story of a nurses bravery. Those stories on this week's CBS Sunday Morning.

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