“Experiments suggest incentives—whether reward or punishment—do not work”—America’s vaccine mandates

INOCULATION OR TESTING requirements are spreading nearly as fast as the Delta variant. But it is not clear they will actually drive more people to get vaccinated. A broad semiconductor shortage has hit plenty of industries; we examine supply-chain subtleties that have made it particularly bad for carmakers. And why Mumbai is suffering from a plague of snakes. Runtime: 18 min

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