Trilobites: Lovers Share Colonies of Skin Microbes, Study Finds

Couples who live together come to share similar communities of bodily bacteria — especially on the feet.x


The Getaway: That North Korea Vacation? It’ll Soon Be Out of the Question for Americans

American passports will not be valid for travel in, through, or to North Korea, after the death of college student Otto F. Warmbierx

Books of The Times: Senator Flake, a Republican, Explains Why He Didn’t Vote for Trump

In “Conscience of a Conservative,” Jeff Flake of Arizona crosses a rhetorical Rubicon to excoriate the president — and the lawmakers who support him.x