In Essence

Come autocrats or invaders, the Russian capital endures.

Facebook Likes may reveal more about yourself than you intend.

The “magic number of greatness” debunked.

Skepticism is snuffing out wonder.

Philosophers cast a notable dissenter into the outer darkness.

Being fat is a risk factor—not a disease caused by the food industry.

Abandoned buildings may yet be redeemed.

Which college-educated women say they’re happiest?