Explainers
States Prepare for Protests Over New Public Health Rules
Police chiefs have asked for clearer guidance before the weekend.
•The Singer Who Turned a Hard Year Into Her Best Album
She talks about the songs she nearly left out.
•How to Protect Your Eyes From Late-Night Screen Glare
Most of the expensive fixes do very little. Two free ones work.
•The Case for a Ten-Minute Walk After Every Meal
New research finds a small habit with a surprisingly large effect.
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