The benefits of a good night’s rest are well known. Less understood by scientists is precisely why we feel tired. New research may have found the source of our fatigue.  

Our Lexington columnist has found a source of frustration for Donald Trump. The president has erased any expectation that the Department of Justice would operate independently of his whims—but now he is paying a price. The anger of his MAGA base over the Epstein affair is directed not just at top Justice officials, but at Mr Trump too.

If you’re in the mood for some deduction of your own, play Dateline, our history game.