Welcome back to our daily news quiz! Test your knowledge each day, Tuesday through Saturday, on the biggest and most interesting stories of the day before. You can find yesterday’s quiz here.

Health officials are beginning to crack the code behind the mysterious illnesses caused by vaping products, and identified a common contaminant.

A judge ruled that the White House must return a previously suspended press pass to a reporter.

And another longtime Republican lawmaker announces his exit, adding to a wave of GOP retirements before the 2020 election.

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